From Proto-Slavic *kojiti (“to heed”), cognate with Polish koić, Slovak kojiť. Attested mainly with pejorative sense to heed, to soothe > to please one's desires in its perfective form *коя̀вам > куѐвам (with dialectal reduction of unaccented median *-o- > -у-).
In other Slavic languages, the same verb has drifted towards the meaning to nurse like in Czech kojit, dialectal Serbo-Croatian kojiti.
ко́я • (kója) first-singular present indicative, impf (perfective коя́вам)
| participles | present active participle | past active aorist participle | past active imperfect participle | past passive participle | verbal noun | adverbial participle | |
|---|---|---|---|---|---|---|---|
| masculine | indefinite | ко́ещ kóešt |
ко́ил, кои́л1 kóil, koíl1 |
ко́ел kóel |
ко́ен kóen |
ко́ейки kóejki | |
| definite subject form | ко́ещият kóeštijat |
ко́илият, кои́лият1 kóilijat, koílijat1 |
— | ко́еният kóenijat | |||
| definite object form | ко́ещия kóeštija |
ко́илия, кои́лия1 kóilija, koílija1 |
— | ко́ения kóenija | |||
| feminine | indefinite | ко́еща kóešta |
ко́ила, кои́ла1 kóila, koíla1 |
ко́ела kóela |
ко́ена kóena | ||
| definite | ко́ещата kóeštata |
ко́илата, кои́лата1 kóilata, koílata1 |
— | ко́ената kóenata | |||
| neuter | indefinite | ко́ещо kóešto |
ко́ило, кои́ло1 kóilo, koílo1 |
ко́ело kóelo |
ко́ено kóeno |
ко́ене kóene | |
| definite | ко́ещото kóeštoto |
ко́илото, кои́лото1 kóiloto, koíloto1 |
— | ко́еното kóenoto |
ко́енето kóeneto | ||
| plural | indefinite | ко́ещи kóešti |
ко́или, кои́ли1 kóili, koíli1 |
ко́ели kóeli |
ко́ени kóeni |
ко́ения, ко́енета kóenija, kóeneta | |
| definite | ко́ещите kóeštite |
ко́илите, кои́лите1 kóilite, koílite1 |
— | ко́ените kóenite |
ко́енията, ко́енетата kóenijata, kóenetata | ||
| person | singular | plural | |||||
|---|---|---|---|---|---|---|---|
| first | second | third | first | second | third | ||
| indicative | аз | ти | той/тя/то | ние | вие | те | |
| present | ко́я kója |
ко́иш kóiš |
ко́и kói |
ко́им kóim |
ко́ите kóite |
ко́ят kójat | |
| imperfect | ко́ех kóeh |
ко́еше kóeše |
ко́еше kóeše |
ко́ехме kóehme |
ко́ехте kóehte |
ко́еха kóeha | |
| aorist | ко́их, кои́х1 kóih, koíh1 |
ко́и, кои́1 kói, koí1 |
ко́и, кои́1 kói, koí1 |
ко́ихме, кои́хме1 kóihme, koíhme1 |
ко́ихте, кои́хте1 kóihte, koíhte1 |
ко́иха, кои́ха1 kóiha, koíha1 | |
| future | pos. | Use ще followed by the present indicative tense | |||||
| neg. | Use ня́ма да followed by the present indicative tense | ||||||
| future in the past | pos. | Use the imperfect indicative tense of ща followed by да and the present indicative tense | |||||
| neg. | Use ня́маше да followed by the present indicative tense | ||||||
| present perfect | Use the present indicative tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| past perfect | Use the imperfect indicative tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| future perfect | Use the future indicative tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| future perfect in the past | Use the future in the past indicative tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| renarrative | аз | ти | той/тя/то | ние | вие | те | |
| present and imperfect | Use the present indicative tense of съм (leave it out in third person) and ко́ел m, ко́ела f, ко́ело n, or ко́ели pl | ||||||
| aorist | Use the present indicative tense of съм (leave it out in third person) and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| future and future in the past | pos. | Use the present/imperfect renarrative tense of ща followed by да and the present indicative tense | |||||
| neg. | Use ня́мало да and the present indicative tense | ||||||
| present and past perfect | Use the present/imperfect renarrative tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| future perfect and future perfect in the past | Use the future/future in the past renarrative tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| dubitative | аз | ти | той/тя/то | ние | вие | те | |
| present and imperfect | Use the present/imperfect renarrative tense of съм and ко́ел m, ко́ела f, ко́ело n, or ко́ели pl | ||||||
| aorist | Use the aorist renarrative tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| future and future in the past | pos. | Use the present/imperfect dubitative tense of ща followed by да and the present indicative tense | |||||
| neg. | Use ня́мало било́ да and the present indicative tense | ||||||
| present and past perfect | none
| ||||||
| future perfect and future perfect in the past | Use the future/future in the past dubitative tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| conclusive | аз | ти | той/тя/то | ние | вие | те | |
| present and imperfect | Use the present indicative tense of съм and ко́ел m, ко́ела f, ко́ело n, or ко́ели pl | ||||||
| aorist | Use the present indicative tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| future and future in the past | pos. | Use the present/imperfect conclusive tense of ща followed by да and the present indicative tense | |||||
| neg. | Use ня́мало е да and the present indicative tense | ||||||
| present and past perfect | Use the present/imperfect conclusive tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| future perfect and future perfect in the past | Use the future/future in the past conclusive tense of съм and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | ||||||
| conditional | аз | ти | той/тя/то | ние | вие | те | |
| Use the first aorist indicative tense of бъ́да and ко́ил/кои́л1 m, ко́ила/кои́ла1 f, ко́ило/кои́ло1 n, or ко́или/кои́ли1 pl | |||||||
| imperative | - | ти | - | - | вие | - | |
| кой koj |
ко́йте kójte |
||||||
1Dialectally marked.
Feminine form of кой m (koj, “who”), from Proto-Slavic *koja.
коя́ • (kojá) f sg (interrogative)
| personal | qualitative | possessive | quantitative | ||
|---|---|---|---|---|---|
| masculine | nominative | кой (koj) | какъ́в (kakǎ́v) ко́лкав (kólkav) |
чий (čij) | ко́лко (kólko) колци́на (kolcína) |
| accusative | кого́ (kogó) | ||||
| dative | кому́ (komú) | ||||
| prepositional | с кого́ (s kogó) | ||||
| feminine | коя́ (kojá) | каква́ (kakvá) ко́лкава (kólkava) |
чия́ (čijá) | ||
| neuter | кое́ (koé) какво́ (kakvó) що (što) |
какво́ (kakvó) ко́лкаво (kólkavo) |
чие́ (čié) | ||
| plural | кои́ (koí) | какви́ (kakví) ко́лкави (kólkavi) |
чии́ (čií) | ||
ко́я • (kója)