кой
кой in 30 Seconds
- Used to ask 'Who?' for males.
- Used to ask 'Which?' for masculine nouns.
- Changes to 'коя', 'кое', 'кои' for other genders.
- Base for the relative pronoun 'който'.
- Grammatical Function
- It acts as the subject or object of a question, seeking to identify a specific entity among many or simply identifying a person.
- Gender Agreement
- Because Bulgarian nouns have gender, 'кой' must match the grammatical gender of the noun it refers to, even if that noun is not yet known.
Кой е този мъж? (Who is this man?)
- Direct Questions
- Standard use for identifying a person: Кой е там? (Who is there?)
Кой иска кафе? (Who wants coffee?)
- Selective Questions
- Choosing from a group: Кой от вас говори английски? (Which of you speaks English?)
Кой спечели мача? (Who won the match?)
- Daily Life
- In families, parents ask children: 'Кой изяде бисквитките?' (Who ate the cookies?).
- Socializing
- At a party: 'Кой е този симпатичен човек?' (Who is this nice person?).
- Gender Mismatch
- Using 'кой' for feminine or neuter subjects. Correct: Коя е тя? / Кое е това дете?
Incorrect: Кой е твоята любима книга? (Книга is feminine, should be 'Коя').
- Case Errors
- Using 'кой' when 'кого' (whom) is required in formal or precise speech. Example: 'Кой видя?' instead of 'Кого видя?' (Whom did you see?).
- Кой vs. Какъв
- 'Кой' = Which specific one? (Кой филм? - Which movie?). 'Какъв' = What kind of? (Какъв филм? - What kind of movie?).
- Кой vs. Чий
- 'Кой' = Who? 'Чий' = Whose? (Чий е този телефон? - Whose phone is this?). Both change for gender.
Кой (Who) vs. Някой (Someone) vs. Никой (No one).
How Formal Is It?
Fun Fact
Bulgarian 'кой' is one of the few words that has preserved some traces of the ancient Slavic case system in modern usage (through 'кого' and 'кому').
Pronunciation Guide
- Pronouncing 'й' as a full 'i' (making it two syllables 'ko-i').
- Missing the 'й' entirely and saying 'ko'.
- Rounding the 'o' too much like 'u'.
- Aspirating the 'k' too heavily.
- Making the vowel sound too long.
Difficulty Rating
Very easy to recognize as it is short and unique.
Requires remembering the 'й' at the end.
Pronunciation of the final semivowel needs practice.
Must distinguish from 'коя', 'кое', 'кои' in fast speech.
What to Learn Next
Prerequisites
Learn Next
Advanced
Grammar to Know
Gender Agreement
Кой (m), Коя (f), Кое (n), Кои (pl).
Relative Pronoun Formation
Кой + то = Който.
Interrogative Position
Кой usually starts the question.
Case Remnants
Кого (accusative), Кому (dative).
Indefinite Pronoun Formation
Ня + кой = Някой.
Examples by Level
Кой е той?
Who is he?
Masculine singular pronoun used for a man.
Кой е това?
Who is this?
General question identifying a person.
Кой иска ябълка?
Who wants an apple?
Subject of the sentence.
Кой е тук?
Who is here?
Asking about a present person.
Кой пее?
Who is singing?
Subject of the verb 'пее'.
Кой е Иван?
Who is Ivan?
Identifying a specific person by name.
Кой пие чай?
Who is drinking tea?
Present tense question.
Кой знае?
Who knows?
Common idiomatic question.
Кой град е по-голям?
Which city is bigger?
'Кой' means 'which' here because 'град' is masculine.
Кой е твоят приятел?
Who is your friend?
Identifying a masculine singular noun.
Кой от тези е твоят?
Which of these is yours?
Choosing from a specific group.
Кой филм гледаме?
Which movie are we watching?
'Филм' is masculine.
Кой е на вратата?
Who is at the door?
Standard phrase for answering a knock.
Кой е този човек?
Who is this person?
'Човек' is masculine singular.
Кой ден е днес?
Which day is today?
'Ден' is masculine.
Кой път да хванем?
Which path/road should we take?
'Път' is masculine.
Не знам кой е той.
I don't know who he is.
Indirect question.
Кого видя в парка?
Whom did you see in the park?
Accusative form 'кого' used as an object.
Който търси, намира.
He who seeks, finds.
Relative pronoun 'който'.
На кого е този ключ?
Whose is this key?
'На кого' expresses possession.
Кой ти каза това?
Who told you that?
Subject with indirect object 'ти'.
Кой ще дойде с мен?
Who will come with me?
Future tense with 'ще'.
Кой е авторът на книгата?
Who is the author of the book?
Identifying a specific role.
Кой от вас е готов?
Which of you is ready?
Specifying a group.
Кой, ако не аз?
Who, if not I?
Rhetorical question.
Който и да е, ще се справи.
Whoever it is, they will manage.
'Който и да е' means 'whoever'.
С кого разговаряхте вчера?
With whom were you speaking yesterday?
Preposition 'с' followed by 'кого'.
Кой знае какво ще се случи?
Who knows what will happen?
Expressing uncertainty.
Кой е източникът на информацията?
Who is the source of the information?
Formal inquiry.
Кой би повярвал на такова нещо?
Who would believe such a thing?
Conditional mood with 'би'.
Кой беше онзи, когото видяхме?
Who was that one whom we saw?
Combination of interrogative and relative pronouns.
Кой от тримата е виновен?
Which of the three is guilty?
Precise selection from a group.
Кой всъщност управлява страната?
Who actually governs the country?
Probing for deeper meaning.
Кому е нужно това страдание?
To whom is this suffering necessary?
Archaic/Formal dative form 'кому'.
Който и да си, покажи се!
Whoever you are, show yourself!
Imperative context with indefinite pronoun.
Кой сте вие, че да ме съдите?
Who are you to judge me?
Rhetorical and confrontational.
Кой е този, който дръзва да ме прекъсне?
Who is this who dares to interrupt me?
Highly formal and dramatic.
Кой би могъл да предвиди този развой?
Who could have predicted this development?
Speculative and academic.
Когото и да попитате, ще ви каже същото.
Whomever you ask, they will tell you the same.
Relative-indefinite object 'когото'.
Кой от тях притежава необходимите качества?
Which of them possesses the necessary qualities?
Formal evaluation.
Кой, в крайна сметка, е мерилото за истина?
Who, ultimately, is the yardstick for truth?
Philosophical inquiry.
Комуто е дадено много, много се и изисква.
To whom much is given, much is required.
Archaic relative dative 'комуто'.
Кой ли не се е опитвал да разгадае тази мистерия?
Who hasn't tried to solve this mystery?
Particle 'ли' used for rhetorical emphasis.
Кой е онзи първичен порив, който ни движи?
What is that primal urge that moves us?
Using 'кой' for abstract masculine concepts.
Кого ли не срещнах по пътя си...
Whom haven't I met on my way...
Exclamatory use with 'ли'.
Кой си мислиш, че си?
Who do you think you are?
Idiomatic expression of challenge.
Който се смее последен, най-добре се смее.
He who laughs last, laughs best.
Classic proverb structure.
Кой би дръзнал да оспори тези факти?
Who would dare to dispute these facts?
Assertive rhetorical question.
Synonyms
Antonyms
Common Collocations
Common Phrases
— A proverb meaning if you look hard enough, you will find what you need.
Не се отказвай, който търси, намира.
— A popular Bulgarian saying suggesting that people who sing are good-natured.
Тя винаги пее, а както знаем, който пее, зло не мисли.
— A traditional proverb about the importance of labor.
В това семейство вярваме, че който не работи, не трябва да яде.
— A phrase used to express that someone has no authority to give orders.
Кой е той, че да ми казва какво да правя?
— Expresses that something will happen at an unknown time in the future.
Ще се върне кой знае кога.
— Refers to a competition or a struggle for dominance.
В този мач ще се види кой на кого.
— Used when everyone in a group is excellent.
Играчите бяха кой от кой по-добър.
— A phrase acknowledging someone's undeniable skill.
Той спечели пак; който може, го може.
Often Confused With
English 'which' can be both, but 'кой' is for specific identity, 'какво' is for general things.
'Кой' asks 'Which one?', 'Какъв' asks 'What kind of?'.
Confusing the singular masculine with the plural.
Idioms & Expressions
— Used rudely to tell someone their opinion wasn't asked for.
Млъкни, кой те пита?
informal— A humorous way to ask who is talking about you behind your back.
Днес цял ден ме сърбят ушите, кой ли ми ги яде?
informal— Once you start something, you must finish it.
Трудно е, но който се хваща на хорото, го играе докрай.
neutral— Used when people disperse or go back to their origins.
След партито всеки си отиде кой откъде е.
neutral— An ironic response to someone who is guilty of the same thing they are criticizing.
Ти ми казваш да не закъснявам? Кой ми го казва!
informal— First come, first served.
В магазина имаше промоция и който превари, той завари.
neutral— The ultimate winner is the one who succeeds in the end.
Не бързай да празнуваш, който се смее последен, най-добре се смее.
neutral— Used to say that an opportunity is too good to pass up.
Безплатна екскурзия? Кой ти дава такова нещо!
informal— If you are afraid of risks, don't try to achieve big things.
Бизнесът е рискован, но който се бои от вълци, не ходи в гората.
neutral— Giving quickly or generously is more valuable.
Помогни му сега, защото който дава, два пъти дава.
literaryEasily Confused
Sounds similar.
'Кой' is singular masculine, 'кои' is plural for all genders.
Кой човек? vs Кои хора?
Both mean 'who'.
'Кой' is masculine, 'коя' is feminine.
Кой е той? vs Коя е тя?
Both mean 'who/which'.
'Кой' is masculine, 'кое' is neuter.
Кой град? vs Кое село?
Translation of 'what/which'.
'Кой' identifies a person/specific item, 'Какво' asks about an object or concept.
Кой е това? (Who is this?) vs Какво е това? (What is this?)
Both translated as 'what' or 'which'.
'Кой' is about identity, 'Какъв' is about quality/description.
Кой е твоят баща? vs Какъв е твоят баща? (What is he like?)
Sentence Patterns
Кой е [Name]?
Кой е Иван?
Кой е [Pronoun]?
Кой е той?
Кой [Noun] е [Adjective]?
Кой град е голям?
Кой иска [Noun]?
Кой иска чай?
Не знам кой [Verb].
Не знам кой пее.
Кого [Verb] [Subject]?
Кого видя ти?
Който и да е, [Verb].
Който и да е, ще дойде.
Кому е [Adjective] [Noun]?
Кому е нужна тази книга?
Word Family
Nouns
Related
How to Use It
Extremely high; among the top 100 most used words.
-
Кой е тя?
→
Коя е тя?
You must use the feminine form 'коя' for a female subject.
-
Кой са тези?
→
Кои са тези?
The plural form 'кои' must be used with the plural verb 'са'.
-
Кой книга искаш?
→
Коя книга искаш?
'Книга' is feminine, so the pronoun must agree.
-
Кой видя?
→
Кого видя?
In formal contexts, the object of the verb should be in the accusative form 'кого'.
-
Кой е това дете?
→
Кое е това дете?
'Дете' is neuter, so 'кое' is required.
Tips
Gender Match
Always look at the ending of the noun you are asking about. If it ends in a consonant, it's likely masculine, so use 'кой'.
The Short Й
Practice the 'й' by saying 'boy' in English and stopping right at the end of the 'y' sound.
Relative Clauses
Once you master 'кой', just add '-то' to make 'който' and start building complex sentences.
Polite Inquiry
When asking 'Who are you?' to an elder, use the plural: 'Кои сте вие?' to be respectful.
Default Gender
If you see someone in the distance and can't tell their gender, always default to 'Кой е това?'.
No Accents
The 'й' in 'кой' is a letter, not an accent mark. Don't forget to write the little hook!
Question Intonation
In Bulgarian, questions often have a rising intonation on the question word itself.
The K-Rule
Most Bulgarian question words start with K (Кой, Къде, Кога, Как). Group them together.
Rhetorical Use
Use 'Кой знае?' as a filler when you don't have an answer; it sounds very native.
Don't confuse with 'Кои'
Remember: 'Кой' is for ONE man, 'Кои' is for MANY people.
Memorize It
Mnemonic
Think of the English word 'COY'. A 'coy' person might hide their identity, so you ask 'KOY?' (Who?) to find out who they are.
Visual Association
Imagine a giant question mark shaped like the letter 'K' standing over a man.
Word Web
Challenge
Try to ask five questions starting with 'Кой' today, focusing on masculine objects or people around you.
Word Origin
Derived from the Proto-Indo-European interrogative root *kʷo-, which also gave rise to the English 'who' and 'what', and the Latin 'quis'. In Old Church Slavonic, it appeared as 'къто'.
Original meaning: Interrogative pronoun referring to a person or thing.
Slavic > South Slavic > Bulgarian.Cultural Context
Generally neutral, but 'Кой си ти?' (Who are you?) can sound aggressive if not said with the right intonation.
English speakers often forget that 'who' has gender in Bulgarian. We use 'who' for everyone, but Bulgarians specify.
Practice in Real Life
Real-World Contexts
Meeting people
- Кой е този?
- Кой си ти?
- Кой е твоят баща?
- Кой е тук?
Shopping
- Кой номер?
- Кой цвят?
- Кой модел?
- Кой е по-евтин?
At home
- Кой е на вратата?
- Кой иска да яде?
- Кой взе ключовете?
- Кой е на телефона?
Travel
- Кой автобус?
- Кой влак?
- Кой път?
- Кой град е това?
Work
- Кой е шефът?
- Кой ще помогне?
- Кой е отговорен?
- Кой проект?
Conversation Starters
"Кой е любимият ти български град?"
"Кой е твоят най-добър приятел?"
"Кой според теб ще спечели мача?"
"Кой е авторът на тази красива картина?"
"Кой е твоят любим актьор?"
Journal Prompts
Напишете за човек, който ви вдъхновява. Кой е той?
Кой е най-трудният избор, който сте правили някога?
Кой е вашият любим спомен от детството?
Кой е човекът, на когото се възхищавате най-много?
Кой е най-интересният град, който сте посещавали?
Frequently Asked Questions
10 questionsNo, you must use 'коя' for women. 'Кой' is strictly masculine or used when the gender is unknown and default.
'Кой' is for questions (Who?), while 'който' is a relative pronoun used to connect parts of a sentence (The man who...).
Yes, 'кого' is used in formal speech and writing when 'who' is the object of the sentence, like 'Whom' in English.
You use 'кой' for masculine items, 'коя' for feminine, and 'кое' for neuter. For example, 'Кой от тях?'
Yes, but only if the noun for the thing is masculine in Bulgarian, like 'град' (city) or 'телевизор' (TV).
The 'й' is part of the masculine singular ending for this pronoun. It changes to 'я', 'е', or 'и' for other forms.
No, 'someone' is 'някой'. 'Кой' is almost always interrogative.
The standard phrase is 'Кой е?'.
Yes, if the animal's name is masculine (e.g., 'кой вълк' - which wolf).
It is the dative form of 'кой', meaning 'to whom'. It is mostly used in formal or literary Bulgarian.
Test Yourself 180 questions
Translate to Bulgarian: 'Who is he?'
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Translate to Bulgarian: 'Who is she?'
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Translate to Bulgarian: 'Who are they?'
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Translate to Bulgarian: 'Which city?'
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Translate to Bulgarian: 'Who knows?'
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Translate to Bulgarian: 'Who is at the door?'
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Translate to Bulgarian: 'Who wants tea?'
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Translate to Bulgarian: 'Who is your friend?'
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Translate to Bulgarian: 'Who is this man?'
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Translate to Bulgarian: 'Who is the author?'
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Ask 'Who is on the phone?'
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Ask 'Which bus goes to the center?'
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Ask 'Who is ready?'
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Ask 'Who said that?'
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Write: 'I don't know who he is.'
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Write: 'The man who is here.'
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Translate: 'Whoever it is.'
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Translate: 'Whom did you call?' (Formal)
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Translate: 'Who won the game?'
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Translate: 'Who is first?'
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Pronounce the word 'Кой'.
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Say 'Who is he?' in Bulgarian.
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Say 'Who is it?' when someone knocks.
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Say 'Who knows?' in Bulgarian.
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Say 'Which city?' in Bulgarian.
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Say 'Who is your friend?' in Bulgarian.
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Say 'Who are they?' in Bulgarian.
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Say 'Who wants coffee?' in Bulgarian.
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Say 'Who is on the phone?' in Bulgarian.
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Say 'Who is next?' in Bulgarian.
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Say 'Who won?' in Bulgarian.
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Say 'Who is at the door?' in Bulgarian.
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Say 'Who is this man?' in Bulgarian.
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Say 'Who is ready?' in Bulgarian.
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Say 'Who is the boss?' in Bulgarian.
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Say 'Who is the author?' in Bulgarian.
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Say 'Who is guilty?' in Bulgarian.
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Say 'Who is responsible?' in Bulgarian.
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Say 'Who is coming?' in Bulgarian.
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Say 'Who is here?' in Bulgarian.
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Identify the pronoun: 'Кой е този човек?'
Identify the gender from the pronoun: 'Коя е тя?'
Identify the gender from the pronoun: 'Кой е той?'
Is the question 'Кои са те?' plural or singular?
Identify the pronoun: 'Кой знае отговора?'
Identify the pronoun: 'Който търси, намира.'
Identify the pronoun: 'Кого видя вчера?'
Identify the pronoun: 'На кого е това?'
Identify the word: 'Кой е на телефона?'
Identify the word: 'Кой иска сладолед?'
Identify the word: 'Кой град е по-хубав?'
Identify the word: 'Кой е твоят баща?'
Identify the word: 'Кой спечели?'
Identify the word: 'Кой е виновен?'
Identify the word: 'Кой е следващият?'
/ 180 correct
Perfect score!
Summary
The word 'кой' is your primary tool for asking 'Who?' in Bulgarian. Always remember it is specifically masculine singular; you must use 'коя' for women and 'кои' for groups. Example: 'Кой е той?' (Who is he?).
- Used to ask 'Who?' for males.
- Used to ask 'Which?' for masculine nouns.
- Changes to 'коя', 'кое', 'кои' for other genders.
- Base for the relative pronoun 'който'.
Gender Match
Always look at the ending of the noun you are asking about. If it ends in a consonant, it's likely masculine, so use 'кой'.
The Short Й
Practice the 'й' by saying 'boy' in English and stopping right at the end of the 'y' sound.
Relative Clauses
Once you master 'кой', just add '-то' to make 'който' and start building complex sentences.
Polite Inquiry
When asking 'Who are you?' to an elder, use the plural: 'Кои сте вие?' to be respectful.