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Phonology

→詳細は「Czech phonology」を参照

Spoken Czech

母音

A Czech vowel chart

チェコ語の母音は、短母音 /a/, /ɛ/, /ɪ/, /o/, /u/ とそれに対応する長母音 /aː/, /ɛː/, /iː/, /oː/, /uː/ の計10個である。 また二重母音 /ou̯/, /au̯/, /ɛu̯/ の3つがある。 このうち /au̯/, /ɛu̯/ は、auto「車」、euro「ユーロ」のように語中にのみ現れる。

チェコ語の正書法においては、母音は以下のように表記される。

• 短母音： a, e/ě, i/y, o, u
• 長母音： á, é, í/ý, ó, ú/ů
• 二重母音： ou, au, eu

⟨ě⟩ は前に置かれた子音を口蓋化する働きがあり、例えば něco は n が口蓋化され /ɲɛt͡so/ と発音される。唇音の後では /jɛ/ （例：běs /bjɛs/）のように発音されるが、⟨mě⟩ は /mɲɛ/ と発音される（例：měkký /mɲɛkiː/）。

子音

以下の表では、チェコ語の子音と対応する文字表記を表す：

		Labial	Alveolar	Post- alveolar	Palatal	Velar	Glottal
Nasal		m ⟨m⟩	n ⟨n⟩		ɲ ⟨ň⟩
Plosive	voiceless	p ⟨p⟩	t ⟨t⟩		c ⟨ť⟩	k ⟨k⟩
	voiced	b ⟨b⟩	d ⟨d⟩		ɟ ⟨ď⟩	(ɡ) ⟨g⟩
Affricate	voiceless		t͡s ⟨c⟩	t͡ʃ ⟨č⟩
	voiced		(d͡z)	(d͡ʒ)
Fricative	voiceless	f ⟨f⟩	s ⟨s⟩	ʃ ⟨š⟩		x ⟨ch⟩
	voiced	v ⟨v⟩	z ⟨z⟩	ʒ ⟨ž⟩			ɦ ⟨h⟩
Trill	plain		r ⟨r⟩
	fricative		r̝ ⟨ř⟩
Approximant			l ⟨l⟩		j ⟨j⟩

チェコ語の子音は、硬子音、中性子音、軟子音に分類される：

• 硬子音: /d/, /ɡ/, /ɦ/, /k/, /n/, /r/, /t/, /x/
• 中性子音: /b/, /f/, /l/, /m/, /p/, /s/, /v/, /z/
• 軟子音: /c/, /ɟ/, /j/, /ɲ/, /r̝/, /ʃ/, /t͡s/, /t͡ʃ/, /ʒ/

Hard consonants may not be followed by i or í in writing, or soft ones by y or ý (except in loanwords such as kilogram). Neutral consonants may take either character. Hard consonants are sometimes known as "strong", and soft ones as "weak". This distinction is also relevant to the declension patterns of nouns, which vary according to whether the final consonant of the noun stem is hard or soft.

Voiced consonants with unvoiced counterparts are unvoiced at the end of a word before a pause, and in consonant clusters voicing assimilation occurs, which matches voicing to the following consonant. The unvoiced counterpart of /ɦ/ is /x/.

The phoneme represented by the letter ř (capital Ř) is very rare among languages and often claimed to be unique to Czech, though it also occurs in some dialects of Kashubian, and formerly occurred in Polish. It represents the raised alveolar non-sonorant trill (IPA: [r̝]), a sound somewhere between Czech r and ž (example: ), and is present in Dvořák. In unvoiced environments, /r̝/ is realized as its voiceless allophone [r̝̊], a sound somewhere between Czech r and š.

/r/, /l/, /m/ といった子音は音節核として一音節を構成することがある。 チェコ語の早口言葉である Strč prst skrz krk「指を喉に突っ込め」は子音のみで文が構成されていることで有名である。

Stress

Each word has primary stress on its first syllable, except for enclitics (minor, monosyllabic, unstressed syllables). In all words of more than two syllables, every odd-numbered syllable receives secondary stress. Stress is unrelated to vowel length; both long and short vowels can be stressed or unstressed. Vowels are never reduced in tone (e.g. to schwa sounds) when unstressed. When a noun is preceded by a monosyllabic preposition, the stress usually moves to the preposition, e.g. do Prahy "to Prague".

Grammar

Czech grammar, like that of other Slavic languages, is fusional; its nouns, verbs, and adjectives are inflected by phonological processes to modify their meanings and grammatical functions, and the easily separable affixes characteristic of agglutinative languages are limited. Czech inflects for case, gender and number in nouns and tense, aspect, mood, person and subject number and gender in verbs.

Parts of speech include adjectives, adverbs, numbers, interrogative words, prepositions, conjunctions and interjections. Adverbs are primarily formed from adjectives by taking the final ý or í of the base form and replacing it with e, ě, y, or o. Negative statements are formed by adding the affix ne- to the main verb of a clause, with one exception: je (he, she or it is) becomes není.

Sentence and clause structure

→「Czech word order」も参照

A Czech-language sign at the entrance to a children's playground

Czech pronouns, nominative case

Person	Singular	Plural
1.	já	my
2.	ty vy (formal)	vy
3.	on (masculine) ona (feminine) ono (neuter)	oni (masculine animate) ony (masculine inanimate, feminine) ona (neuter)

Because Czech uses grammatical case to convey word function in a sentence (instead of relying on word order, as English does), its word order is flexible. As a pro-drop language, in Czech an intransitive sentence can consist of only a verb; information about its subject is encoded in the verb. Enclitics (primarily auxiliary verbs and pronouns) appear in the second syntactic slot of a sentence, after the first stressed unit. The first slot can contain a subject or object, a main form of a verb, an adverb, or a conjunction (except for the light conjunctions a, "and", i, "and even" or ale, "but").

Czech syntax has a subject–verb–object sentence structure. In practice, however, word order is flexible and used to distinguish topic and focus, with the topic or theme (known referents) preceding the focus or rheme (new information) in a sentence; Czech has therefore been described as a topic-prominent language. Although Czech has a periphrastic passive construction (like English), in colloquial style, word-order changes frequently replace the passive voice. For example, to change "Peter killed Paul" to "Paul was killed by Peter" the order of subject and object is inverted: Petr zabil Pavla ("Peter killed Paul") becomes "Paul, Peter killed" (Pavla zabil Petr). Pavla is in the accusative case, the grammatical object of the verb.

A word at the end of a clause is typically emphasized, unless an upward intonation indicates that the sentence is a question:

• Pes jí bagetu. – The dog eats the baguette (rather than eating something else).
• Bagetu jí pes. – The dog eats the baguette (rather than someone else doing so).
• Pes bagetu jí. – The dog eats the baguette (rather than doing something else to it).
• Jí pes bagetu? – Does the dog eat the baguette? (emphasis ambiguous)

In parts of Bohemia (including Prague), questions such as Jí pes bagetu? without an interrogative word (such as co, "what" or kdo, "who") are intoned in a slow rise from low to high, quickly dropping to low on the last word or phrase.

In modern Czech syntax, adjectives precede nouns, with few exceptions. Relative clauses are introduced by relativizers such as the adjective který, analogous to the English relative pronouns "which", "that" and "who"/"whom". As with other adjectives, it agrees with its associated noun in gender, number and case. Relative clauses follow the noun they modify. The following is a glossed example:

Chc-i

want-1SG

navštív-it

visit-INF

universit-u,

university-SG.ACC,

na

on

kter-ou

which-SG.F.ACC

chod-í

attend-3SG

Jan.

John.SG.NOM

Chc-i navštív-it universit-u, na kter-ou chod-í Jan.

want-1SG visit-INF university-SG.ACC, on which-SG.F.ACC attend-3SG John.SG.NOM

I want to visit the university that John attends.

Declension

→詳細は「Czech declension」を参照

In Czech, nouns and adjectives are declined into one of seven grammatical cases which indicate their function in a sentence, two numbers (singular and plural) and three genders (masculine, feminine and neuter). The masculine gender is further divided into animate and inanimate classes.

Case

A street named after Božena Němcová with her name declined in the genitive case (a sign probably from the time of the Protectorate).

A nominative–accusative language, Czech marks subject nouns of transitive and intransitive verbs in the nominative case, which is the form found in dictionaries, and direct objects of transitive verbs are declined in the accusative case. The vocative case is used to address people. The remaining cases (genitive, dative, locative and instrumental) indicate semantic relationships, such as noun adjuncts (genitive), indirect objects (dative), or agents in passive constructions (instrumental). Additionally prepositions and some verbs require their complements to be declined in a certain case. The locative case is only used after prepositions. An adjective's case agrees with that of the noun it modifies. When Czech children learn their language's declension patterns, the cases are referred to by number:

Cases in Czech

No.	Ordinal name (Czech)	Full name (Czech)	Case	Main usage
1.	první pád	nominativ	nominative	Subjects
2.	druhý pád	genitiv	genitive	Noun adjuncts, possession, prepositions of motion, time and location
3.	třetí pád	dativ	dative	Indirect objects, prepositions of motion
4.	čtvrtý pád	akuzativ	accusative	Direct objects, prepositions of motion and time
5.	pátý pád	vokativ	vocative	Addressing someone
6.	šestý pád	lokál	locative	Prepositions of location, time and topic
7.	sedmý pád	instrumentál	instrumental	Passive agents, instruments, prepositions of location

Some prepositions require the nouns they modify to take a particular case. The cases assigned by each preposition are based on the physical (or metaphorical) direction, or location, conveyed by it. For example, od (from, away from) and z (out of, off) assign the genitive case. Other prepositions take one of several cases, with their meaning dependent on the case; na means "onto" or "for" with the accusative case, but "on" with the locative.

This is a glossed example of a sentence using several cases:

Nes-l

carry-SG.M.PST

js-em

be-1.SG

krabic-i

box-SG.ACC

do

into

dom-u

house-SG.GEN

se

with

sv-ým

own-SG.INS

přítel-em.

friend-SG.INS

Nes-l js-em krabic-i do dom-u se sv-ým přítel-em.

carry-SG.M.PST be-1.SG box-SG.ACC into house-SG.GEN with own-SG.INS friend-SG.INS

I carried the box into the house with my friend.

Gender

Czech distinguishes three genders—masculine, feminine, and neuter—and the masculine gender is subdivided into animate and inanimate. With few exceptions, feminine nouns in the nominative case end in -a, -e, or a consonant; neuter nouns in -o, -e, or -í, and masculine nouns in a consonant. Adjectives, participles, most pronouns, and the numbers "one" and "two" are marked for gender and agree with the gender of the noun they modify or refer to. Past tense verbs are also marked for gender, agreeing with the gender of the subject, e.g. dělal (he did, or made); dělala (she did, or made) and dělalo (it did, or made). Gender also plays a semantic role; most nouns that describe people and animals, including personal names, have separate masculine and feminine forms which are normally formed by adding a suffix to the stem, for example Čech (Czech man) has the feminine form Češka (Czech woman).

Nouns of different genders follow different declension patterns. Examples of declension patterns for noun phrases of various genders follow:

Case	Noun/adjective
	Big dog (m. anim. sg.)	Black backpack (m. inanim. sg.)	Small cat (f. sg.)	Hard wood (n. sg.)
Nom.	velký pes (big dog)	černý batoh (black backpack)	malá kočka (small cat)	tvrdé dřevo (hard wood)
Gen.	bez velkého psa (without the big dog)	bez černého batohu (without the black backpack)	bez malé kočky (without the small cat)	bez tvrdého dřeva (without the hard wood)
Dat.	k velkému psovi (to the big dog)	ke černému batohu (to the black backpack)	k malé kočce (to the small cat)	ke tvrdému dřevu (to the hard wood)
Acc.	vidím velkého psa (I see the big dog)	vidím černý batoh (I see the black backpack)	vidím malou kočku (I see the small cat)	vidím tvrdé dřevo (I see the hard wood)
Voc.	velký pse! (big dog!)	černý batohu! (black backpack!)	malá kočko! (small cat!)	tvrdé dřevo! (hard wood!)
Loc.	o velkém psovi (about the big dog)	o černém batohu (about the black backpack)	o malé kočce (about the small cat)	o tvrdém dřevě (about the hard wood)
Inst.	s velkým psem (with the big dog)	s černým batohem (with the black backpack)	s malou kočkou (with the small cat)	s tvrdým dřevem (with the hard wood)

Number

Nouns are also inflected for number, distinguishing between singular and plural. Typical of a Slavic language, Czech cardinal numbers one through four allow the nouns and adjectives they modify to take any case, but numbers over five require subject and direct object noun phrases to be declined in the genitive plural instead of the nominative or accusative, and when used as subjects these phrases take singular verbs. For example:

English	Czech
one Czech crown was...	jedna koruna česká byla...
two Czech crowns were...	dvě koruny české byly...
three Czech crowns were...	tři koruny české byly...
four Czech crowns were...	čtyři koruny české byly...
five Czech crowns were...	pět korun českých bylo...

Numbers decline for case, and the numbers one and two are also inflected for gender. Numbers one through five are shown below as examples. The number one has declension patterns identical to those of the demonstrative pronoun ten.

	1	2	3	4	5
Nominative	jeden (masc) jedna (fem) jedno (neut)	dva (masc) dvě (fem, neut)	tři	čtyři	pět
Genitive	jednoho (masc) jedné (fem) jednoho (neut)	dvou	tří or třech	čtyř or čtyřech	pěti
Dative	jednomu (masc) jedné (fem) jednomu (neut)	dvěma	třem	čtyřem	pěti
Accusative	jednoho (masc an.) jeden (masc in.) jednu (fem) jedno (neut)	dva (masc) dvě (fem, neut)	tři	čtyři	pět
Locative	jednom (masc) jedné (fem) jednom (neut)	dvou	třech	čtyřech	pěti
Instrumental	jedním (masc) jednou (fem) jedním (neut)	dvěma	třemi	čtyřmi	pěti

Although Czech's grammatical numbers are singular and plural, several residuals of dual forms remain, such as the words dva ("two") and oba ("both"), which decline the same way. Some nouns for paired body parts use a historical dual form to express plural in some cases: ruka (hand)—ruce (nominative); noha (leg)—nohama (instrumental), nohou (genitive/locative); oko (eye)—oči, and ucho (ear)—uši. While two of these nouns are neuter in their singular forms, all plural forms are considered feminine; their gender is relevant to their associated adjectives and verbs. These forms are plural semantically, used for any non-singular count, as in mezi čtyřma očima (face to face, lit. among four eyes). The plural number paradigms of these nouns are a mixture of historical dual and plural forms. For example, nohy (legs; nominative/accusative) is a standard plural form of this type of noun.

Verb conjugation

→詳細は「Czech conjugation」を参照

Czech verbs agree with their subjects in person (first, second or third), number (singular or plural), and in constructions involving participles, which includes the past tense, also in gender. They are conjugated for tense (past, present or future) and mood (indicative, imperative or conditional). For example, the conjugated verb mluvíme (we speak) is in the present tense and first-person plural; it is distinguished from other conjugations of the infinitive mluvit by its ending, -íme. The infinitive form of Czech verbs ends in -t (archaically, -ti or -ci). It is the form found in dictionaries and the form that follows auxiliary verbs (for example, můžu tě slyšet—"I can hear you").

Aspect

→「Grammatical aspect in Slavic languages」も参照

Typical of Slavic languages, Czech marks its verbs for one of two grammatical aspects: perfective and imperfective. Most verbs are part of inflected aspect pairs—for example, koupit (perfective) and kupovat (imperfective). Although the verbs' meaning is similar, in perfective verbs the action is completed and in imperfective verbs it is ongoing or repeated. This is distinct from past and present tense. Any verb of either aspect can be conjugated into either the past or present tense, but the future tense is only used with imperfective verbs. Aspect describes the state of the action at the time specified by the tense.

The verbs of most aspect pairs differ in one of two ways: by prefix or by suffix. In prefix pairs, the perfective verb has an added prefix—for example, the imperfective psát (to write, to be writing) compared with the perfective napsat (to write down). The most common prefixes are na-, o-, po-, s-, u-, vy-, z- and za-. In suffix pairs, a different infinitive ending is added to the perfective stem; for example, the perfective verbs koupit (to buy) and prodat (to sell) have the imperfective forms kupovat and prodávat. Imperfective verbs may undergo further morphology to make other imperfective verbs (iterative and frequentative forms), denoting repeated or regular action. The verb jít (to go) has the iterative form chodit (to go regularly) and the frequentative form chodívat (to go occasionally; to tend to go).

Many verbs have only one aspect, and verbs describing continual states of being—být (to be), chtít (to want), moct (to be able to), ležet (to lie down, to be lying down)—have no perfective form. Conversely, verbs describing immediate states of change—for example, otěhotnět (to become pregnant) and nadchnout se (to become enthusiastic)—have no imperfective aspect.

Tense

Conjugation of být in future tense

Person	Singular	Plural
1.	budu	budeme
2.	budeš	budete
3.	bude	budou

The present tense in Czech is formed by adding an ending which agrees with the person and number of the subject at the end of the verb stem. As Czech is a null-subject language, the subject pronoun can be omitted unless it is needed for clarity. The past tense is formed using a participle which ends in -l and a further ending which agrees with the gender and number of the subject. For the first and second persons, the auxiliary verb být conjugated in the present tense is added.

In some contexts, the present tense of perfective verbs (which differs from the English present perfect) implies future action; in others, it connotes habitual action. The perfective present is used to refer to completion of actions in the future and is distinguished from the imperfective future tense, which refers to actions that will be ongoing in the future. The future tense is regularly formed using the future conjugation of být (as shown in the table on the left) and the infinitive of an imperfective verb, for example, budu jíst—"I will eat" or "I will be eating". Where budu has a noun or adjective complement it means "I will be", for example, budu šťastný (I will be happy). Some verbs of movement form their future tense by adding the prefix po- to the present tense forms instead, e.g. jedu ("I go") > pojedu ("I will go").

Mood

Conditional form of koupit (to buy)

Person	Singular	Plural
1.	koupil/a bych	koupili/y bychom
2.	koupil/a bys	koupili/y byste
3.	koupil/a/o by	koupili/y/a by

Czech verbs have three grammatical moods: indicative, imperative and conditional. The imperative mood is formed by adding specific endings for each of three person–number categories: -Ø/-i/-ej for second-person singular, -te/-ete/-ejte for second-person plural and -me/-eme/-ejme for first-person plural. Imperatives are usually expressed using perfective verbs if positive and imperfective verbs if negative. The conditional mood is formed with a conditional auxiliary verb after the participle ending in -l which is used to form the past tense. This mood indicates hypothetical events and can also be used to express wishes.

Verb classes

→詳細は「Morphological classification of Czech verbs」を参照

Most Czech verbs fall into one of five classes, which determine their conjugation patterns. The future tense of být would be classified as a Class I verb because of its endings. Examples of the present tense of each class and some common irregular verbs follow in the tables below:

	Class I	Class II	Class III	Class IV	Class V
Definition	to carry	to print	to wander	to suffer	to do, to make
Infinitive	nést	tisknout	putovat	trpět	dělat
1st p. sg.	nesu	tisknu	putuji	trpím	dělám
2nd p. sg.	neseš	tiskneš	putuješ	trpíš	děláš
3rd p. sg.	nese	tiskne	putuje	trpí	dělá
1st p. pl.	neseme	tiskneme	putujeme	trpíme	děláme
2nd p. pl.	nesete	tisknete	putujete	trpíte	děláte
3rd p. pl.	nesou	tisknou	putují	trpí	dělají

Irregular verbs

Definition	to be	to want	to eat	to know
Infinitive	být	chtít	jíst	vědět
1st p. sg.	jsem	chci	jím	vím
2nd p. sg.	jsi	chceš	jíš	víš
3rd p. sg.	je	chce	jí	ví
1st p. pl.	jsme	chceme	jíme	víme
2nd p. pl.	jste	chcete	jíte	víte
3rd p. pl.	jsou	chtějí	jedí	vědí

Orthography

The handwritten Czech alphabet

→詳細は「Czech orthography」を参照

→「Czech Braille」も参照

Czech has one of the most phonemic orthographies of all European languages. Its alphabet contains 42 graphemes, most of which correspond to individual phonemes, and only contains only one digraph: ch, which follows h in the alphabet. The characters q, w and x appear only in foreign words. The háček (ˇ) is used with certain letters to form new characters: š, ž, and č, as well as ň, ě, ř, ť, and ď (the latter five uncommon outside Czech). The last two letters are sometimes written with a comma above (ʼ, an abbreviated háček) because of their height. Czech orthography has influenced the orthographies of other Balto-Slavic languages and some of its characters have been adopted for transliteration of Cyrillic.

Czech orthography neatly reflects vowel length; long vowels are indicated by an acute accent or, occasionally with ů, a ring. Long u is usually written ú at the beginning of a word or morpheme (úroda, neúrodný) and ů elsewhere, except for loanwords (skútr) or onomatopoeia (bú). Long vowels and ě are not considered separate letters in the alphabetical order. The character ó exists only in loanwords and onomatopoeia.

Czech typographical features not associated with phonetics generally resemble those of most European languages that use the Latin script, including English. Proper nouns, honorifics, and the first letters of quotations are capitalized, and punctuation is typical of other Latin European languages. Ordinal numbers (1st) use a point, as in German (1.). The Czech language uses a decimal comma instead of a decimal point. When writing a long number, spaces between every three digits, including those in decimal places, may be used for better orientation in handwritten texts. The number 1,234,567.89101 may be written as 1234567,89101 or 1 234 567,891 01. In proper noun phrases (except personal and settlement names), only the first word is capitalized (Pražský hrad, Prague Castle) (proper nouns inside such phrases are also capitalized).

Varieties

→詳細は「Czech–Slovak languages」を参照

Josef Jungmann, whose Czech-German dictionary laid the foundations for modern Standard Czech.

The modern literary standard and prestige variety, known as "Standard Czech" (spisovná čeština) is based on the standardization during the Czech National Revival in the 1830s, significantly influenced by Josef Jungmann's Czech–German dictionary published during 1834–1839. Jungmann used vocabulary of the Bible of Kralice (1579–1613) period and of the language used by his contemporaries. He borrowed words not present in Czech from other Slavic languages or created neologisms. Standard Czech is the formal register of the language which is used in official documents, formal literature, newspaper articles, education and occasionally public speeches. It is codified by the Czech Language Institute, who publish occasional reforms to the codification. The most recent reform took place in 1993. The term hovorová čeština (lit. "Colloquial Czech") is sometimes used to refer to the spoken variety of standard Czech.

The most widely spoken vernacular form of the language is called "Common Czech" (obecná čeština), an interdialect influenced by spoken Standard Czech and the Central Bohemian dialects of the Prague region. Other Bohemian regional dialects have become marginalized, while Moravian dialects remain more widespread and diverse, with a political movement for Moravian linguistic revival active since the 1990s.

These varieties of the language (Standard Czech, spoken/colloquial Standard Czech, Common Czech, and regional dialects) form a stylistic continuum, in which contact between varieties of a similar prestige influences change within them.

Common Czech

Dialects of Czech, Moravian, Lach, and Cieszyn Silesian spoken in the Czech Republic. The border areas, where German was formerly spoken, are now mixed.

The main Czech vernacular, spoken primarily in Bohemia including the capital Prague, is known as Common Czech (obecná čeština). This is an academic distinction; most Czechs are unaware of the term or associate it with deformed or "incorrect" Czech. Compared to Standard Czech, Common Czech is characterized by simpler inflection patterns and differences in sound distribution.

Common Czech is distinguished from spoken/colloquial Standard Czech (hovorová čeština), which is a stylistic variety within standard Czech. Tomasz Kamusella defines the spoken variety of Standard Czech as a compromise between Common Czech and the written standard, while Miroslav Komárek calls Common Czech an intersection of spoken Standard Czech and regional dialects.

Common Czech has become ubiquitous in most parts of the Czech Republic since the later 20th century. It is usually defined as an interdialect used in common speech in Bohemia and western parts of Moravia (by about two thirds of all inhabitants of the Czech Republic). Common Czech is not codified, but some of its elements have become adopted in the written standard. Since the second half of the 20th century, Common Czech elements have also been spreading to regions previously unaffected, as a consequence of media influence. Standard Czech is still the norm for politicians, businesspeople and other Czechs in formal situations, but Common Czech is gaining ground in journalism and the mass media. The colloquial form of Standard Czech finds limited use in daily communication due to the expansion of the Common Czech interdialect. It is sometimes defined as a theoretical construct rather than an actual tool of colloquial communication, since in casual contexts, the non-standard interdialect is preferred.

Common Czech phonology is based on that of the Central Bohemian dialect group, which has a slightly different set of vowel phonemes to Standard Czech. The phoneme /ɛː/ is peripheral and usually merges with /iː/, e.g. in malý město (small town), plamínek (little flame) and lítat (to fly), and a second native diphthong /ɛɪ̯/ occurs, usually in places where Standard Czech has /iː/, e.g. malej dům (small house), mlejn (mill), plejtvat (to waste), bejt (to be). In addition, a prothetic v- is added to most words beginning o-, such as votevřít vokno (to open the window).

Non-standard morphological features that are more or less common among all Common Czech speakers include:

• unified plural endings of adjectives: malý lidi (small people), malý ženy (small women), malý města (small towns) – standard: malí lidé, malé ženy, malá města;
• unified instrumental ending -ma in plural: s těma dobrejma lidma, ženama, chlapama, městama (with the good people, women, guys, towns) – standard: s těmi dobrými lidmi, ženami, chlapy, městy. In essence, this form resembles the form of the dual, which was once a productive form, but now is almost extinct and retained in a lexically specific set of words. In Common Czech the ending became productive again around the 17th century, but used as a substitute for a regular plural form.
• omission of the syllabic -l in the masculine ending of past tense verbs: řek (he said), moh (he could), pích (he pricked) – standard: řekl, mohl, píchl.
• tendency of merging the locative singular masculine/neuter for adjectives with the instrumental by changing the locative ending -ém to -ým and then shortening the vowel: mladém (standard locative), mladým (standard instrumental) > mladým (Common Czech locative), mladym (Common Czech instrumental) > mladym (Common Czech locative/instrumental with shortening).

Examples of declension (Standard Czech is added in italics for comparison):

		Masculine animate	Masculine inanimate	Feminine	Neuter
Sg.	Nominative	mladej člověk mladý člověk	mladej stát mladý stát	mladá žena mladá žena	mladý zvíře mladé zvíře
	Genitive	mladýho člověka mladého člověka	mladýho státu mladého státu	mladý ženy mladé ženy	mladýho zvířete mladého zvířete
	Dative	mladýmu člověkovi mladému člověku	mladýmu státu mladému státu	mladý ženě mladé ženě	mladýmu zvířeti mladému zvířeti
	Accusative	mladýho člověka mladého člověka	mladej stát mladý stát	mladou ženu mladou ženu	mladý zvíře mladé zvíře
	Vocative	mladej člověče! mladý člověče!	mladej státe! mladý státe!	mladá ženo! mladá ženo!	mladý zvíře! mladé zvíře!
	Locative	mladým člověkovi mladém člověkovi	mladým státě mladém státě	mladý ženě mladé ženě	mladým zvířeti mladém zvířeti
	Instrumental	mladym člověkem mladým člověkem	mladym státem mladým státem	mladou ženou mladou ženou	mladym zvířetem mladým zvířetem
Pl.	Nominative	mladý lidi mladí lidé	mladý státy mladé státy	mladý ženy mladé ženy	mladý zvířata mladá zvířata
	Genitive	mladejch lidí mladých lidí	mladejch států mladých států	mladejch žen mladých žen	mladejch zvířat mladých zvířat
	Dative	mladejm lidem mladým lidem	mladejm státům mladým státům	mladejm ženám mladým ženám	mladejm zvířatům mladým zvířatům
	Accusative	mladý lidi mladé lidi	mladý státy mladé státy	mladý ženy mladé ženy	mladý zvířata mladá zvířata
	Vocative	mladý lidi! mladí lidé!	mladý státy! mladé státy!	mladý ženy! mladé ženy!	mladý zvířata! mladá zvířata!
	Locative	mladejch lidech mladých lidech	mladejch státech mladých státech	mladejch ženách mladých ženách	mladejch zvířatech mladých zvířatech
	Instrumental	mladejma lidma mladými lidmi	mladejma státama mladými státy	mladejma ženama mladými ženami	mladejma zvířatama mladými zvířaty

mladý člověk – young man/person, mladí lidé – young people, mladý stát – young state, mladá žena – young woman, mladé zvíře – young animal

Bohemian dialects

A headstone in Český Krumlov from 1591. The inscription features the distinctive Bohemian diphthong   /ɛɪ̯/, spelled ⟨ey⟩.

→詳細は「Chod dialect」を参照

Apart from the Common Czech vernacular, there remain a variety of other Bohemian dialects, mostly in marginal rural areas. Dialect use began to weaken in the second half of the 20th century, and by the early 1990s regional dialect use was stigmatized, associated with the shrinking lower class and used in literature or other media for comedic effect. Increased travel and media availability to dialect-speaking populations has encouraged them to shift to (or add to their own dialect) Standard Czech.

The Czech Statistical Office in 2003 recognized the following Bohemian dialects:

• Nářečí středočeská (Central Bohemian dialects)
• Nářečí jihozápadočeská (Southwestern Bohemian dialects)

• Podskupina chodská (Chod subgroup)
• Podskupina doudlebská (Doudleby subgroup)

• Nářečí severovýchodočeská (Northeastern Bohemian dialects)

• Podskupina podkrknošská (Krkonoše subgroup)

Moravian dialects

→詳細は「Moravian dialects」を参照

→「Lach dialects」および「Cieszyn Silesian dialect」も参照

Traditional territory of the main dialect groups of Moravia and Czech Silesia. Green: Central Moravian, Red: East Moravian, Yellow: Lach (Silesian), Pink: Cieszyn Silesian, Orange: Bohemian–Moravian transitional dialects, Purple: Mixed areas

The Czech dialects spoken in Moravia and Silesia are known as Moravian (moravština). In the Austro-Hungarian Empire, "Bohemian-Moravian-Slovak" was a language citizens could register as speaking (with German, Polish and several others). In the 2011 census, where respondents could optionally specify up to two first languages, 62,908 Czech citizens specified Moravian as their first language and 45,561 specified both Moravian and Czech.

Beginning in the sixteenth century, some varieties of Czech resembled Slovak; the southeastern Moravian dialects, in particular, are sometimes considered dialects of Slovak rather than Czech. These dialects form a continuum between the Czech and Slovak languages, using the same declension patterns for nouns and pronouns and the same verb conjugations as Slovak.

The Czech Statistical Office in 2003 recognized the following Moravian dialects:

• Nářečí českomoravská (Bohemian–Moravian dialects)
• Nářečí středomoravská (Central Moravian dialects)

• Podskupina tišnovská (Tišnov subgroup)

• Nářečí východomoravská (Eastern Moravian dialects)

• Podskupina slovácká (Moravian Slovak subgroup)
• Podskupina valašská (Moravian Wallachian subgroup)

• Nářečí slezská (Silesian dialects)

Sample

In a 1964 textbook on Czech dialectology, Břetislav Koudela used the following sentence to highlight phonetic differences between dialects:

Standard Czech:	Dej mouku ze mlýna na vozík.
Common Czech:	Dej mouku ze mlejna na vozejk.
Central Moravian:	Dé móko ze mléna na vozék.
Eastern Moravian:	Daj múku ze młýna na vozík.
Silesian:	Daj muku ze młyna na vozik.
Slovak:	Daj múku z mlyna na vozík.
English:	Put the flour from the mill into the cart.

Mutual intelligibility with Slovak

Czech and Slovak have been considered mutually intelligible; speakers of either language can communicate with greater ease than those of any other pair of West Slavic languages. Following the 1993 dissolution of Czechoslovakia, mutual intelligibility declined for younger speakers, probably because Czech speakers began to experience less exposure to Slovak and vice versa. A 2015 study involving participants with a mean age of around 23 nonetheless concluded that there remained a high degree of mutual intelligibility between the two languages. Grammatically, both languages share a common syntax.

One study showed that Czech and Slovak lexicons differed by 80 percent, but this high percentage was found to stem primarily from differing orthographies and slight inconsistencies in morphological formation; Slovak morphology is more regular (when changing from the nominative to the locative case, Praha becomes Praze in Czech and Prahe in Slovak). The two lexicons are generally considered similar, with most differences found in colloquial vocabulary and some scientific terminology. Slovak has slightly more borrowed words than Czech.

The similarities between Czech and Slovak led to the languages being considered a single language by a group of 19th-century scholars who called themselves "Czechoslavs" (Čechoslované), believing that the peoples were connected in a way which excluded German Bohemians and (to a lesser extent) Hungarians and other Slavs. During the First Czechoslovak Republic (1918–1938), although "Czechoslovak" was designated as the republic's official language, both Czech and Slovak written standards were used. Standard written Slovak was partially modeled on literary Czech, and Czech was preferred for some official functions in the Slovak half of the republic. Czech influence on Slovak was protested by Slovak scholars, and when Slovakia broke off from Czechoslovakia in 1938 as the Slovak State (which then aligned with Nazi Germany in World War II), literary Slovak was deliberately distanced from Czech. When the Axis powers lost the war and Czechoslovakia reformed, Slovak developed somewhat on its own (with Czech influence); during the Prague Spring of 1968, Slovak gained independence from (and equality with) Czech, due to the transformation of Czechoslovakia from a unitary state to a federation. Since the dissolution of Czechoslovakia in 1993, "Czechoslovak" has referred to improvised pidgins of the languages which have arisen from the decrease in mutual intelligibility.

Vocabulary

→「List of English words of Czech origin」も参照

Czech vocabulary derives primarily from Slavic, Baltic and other Indo-European roots. Although most verbs have Balto-Slavic origins, pronouns, prepositions and some verbs have wider, Indo-European roots. Some loanwords have been restructured by folk etymology to resemble native Czech words (e.g. hřbitov, "graveyard" and listina, "list").

Most Czech loanwords originated in one of two time periods. Earlier loanwords, primarily from German, Greek and Latin, arrived before the Czech National Revival. More recent loanwords derive primarily from English and French, and also from Hebrew, Arabic and Persian. Many Russian loanwords, principally animal names and naval terms, also exist in Czech.

Although older German loanwords were colloquial, recent borrowings from other languages are associated with high culture. During the nineteenth century, words with Greek and Latin roots were rejected in favor of those based on older Czech words and common Slavic roots; "music" is muzyka in Polish and музыка (muzyka) in Russian, but in Czech it is hudba. Some Czech words have been borrowed as loanwords into English and other languages—for example, robot (from robota, "labor") and polka (from polka, "Polish woman" or from "půlka" "half").

Example text

Article 1 of the Universal Declaration of Human Rights in Czech:

Všichni lidé rodí se svobodní a sobě rovní co do důstojnosti a práv. Jsou nadáni rozumem a svědomím a mají spolu jednat v duchu bratrství.

Article 1 of the Universal Declaration of Human Rights in English:

All human beings are born free and equal in dignity and rights. They are endowed with reason and conscience and should act towards one another in a spirit of brotherhood.