The genitive plural is the single hardest ending set in Ukrainian, and it earns the reputation honestly: it fuses three different systems at once — which ending you choose, whether a fleeting vowel slots in to break up a consonant cluster, and whether the о/і alternation flips a vowel as the syllable opens or closes. Learn it as a list and you will drown. Learn it as a procedure and you will be able to derive шкіл, ві́кон, ноче́й, столі́в on demand. That is the whole goal of this page.
What feeds into the genitive plural
You reach for the genitive plural constantly: after numbers 5 and up (п’ять столі́в — see genitive after numbers), after quantity words (бага́то книг), after the prepositions that take the genitive (без дру́зів), and in any plural "of" phrase. So this is not an exotic corner — it is everyday machinery.
The three endings
There are three main endings, and the gender/declension picks which one:
| Ending | Applies to | Example (nom. sg. → gen. pl.) |
|---|---|---|
| zero (-∅) | feminine -а/-я (decl. I), neuter -о (decl. II) | кни́га → книг, вікно́ → ві́кон |
| -ів / -їв | most masculines (decl. II), some neuters in -е | стіл → столі́в, край → краї́в |
| -ей | feminine -ь (decl. III), many soft/hushing stems | ніч → ноче́й, кінь → коне́й |
Ending 1: the zero ending (feminine -а/-я, neuter -о)
Feminine declension-I and neuter declension-II nouns simply drop their final vowel and end on the bare stem. Nothing is added.
| Nominative sg. | Genitive pl. | Meaning |
|---|---|---|
| маши́на | маши́н | car |
| кни́га | книг | book |
| сло́во | слів | word (о→і!) |
| мі́сце | місць | place |
У на́шому селі́ маши́н ма́ло, бі́льшість лю́дей хо́дить пі́шки.
In our village there are few cars; most people walk. (бага́то/ма́ло маши́н — zero ending, bare stem.)
The trouble starts when dropping the vowel leaves an awkward consonant cluster at the end. Ukrainian repairs this with a fleeting vowel — an о or е that slots between the last two consonants.
The fleeting vowel: о or е inserts to break clusters
When the bare stem would end in two consonants that don't sit comfortably together, a vowel appears. Choose е if the second consonant is soft, a hushing sound, or й; otherwise choose о.
| Nominative sg. | Genitive pl. | Inserted vowel |
|---|---|---|
| вікно́ | ві́кон | о (вікн- → ві́кон) |
| сестра́ | сесте́р | е (сестр- → сесте́р) |
| пі́сня | пісе́нь | е (пісн- → пісе́нь, soft) |
| земля́ | земе́ль | е (земл- → земе́ль, soft) |
| кни́жка | книжо́к | о (книжк- → книжо́к) |
| я́блуко | я́блук | none needed (the cluster -блук is fine) |
Скі́льки тут ві́кон — ці́лий день мо́жна ми́ти!
So many windows here — you could spend the whole day washing them! (вікно́ → ві́кон: zero ending + fleeting о.)
У ме́не дві сестри́, але́ обо́х сесте́р я ба́чу рі́дко.
I have two sisters, but I rarely see either of them. (сестра́ → сесте́р: zero ending + fleeting е.)
Він знав сті́льки пісе́нь, що міг співа́ти ці́лий ве́чір.
He knew so many songs that he could sing the whole evening. (пі́сня → пісе́нь: soft stem, fleeting е.)
The о/і alternation surfaces in zero-ending forms
The third system. When the zero ending leaves the final syllable closed (consonant at the end), an underlying о or е can surface as і — the closed-syllable alternation running in reverse from what you saw in the singular. This is why "leg" and "mountain" look so different in the plural.
| Nominative sg. (open syllable) | Genitive pl. (closed → і) | Meaning |
|---|---|---|
| нога́ | ніг | leg / foot |
| гора́ | гір | mountain |
| голова́ | голі́в | head |
| шко́ла | шкіл | school |
| борода́ | борі́д | beard |
Сті́льки гір я не ба́чив навіть у Карпа́тах.
I haven't seen so many mountains even in the Carpathians. (гора́ → гір: zero ending, о→і.)
У на́шому місте́чку ті́льки дві шко́ли, а було́ п’ять шкіл.
In our town there are only two schools now, but there used to be five. (шко́ла → шкіл: zero ending, о→і.)
Ending 2: -ів / -їв (masculines)
Masculine declension-II nouns take -ів (hard/most stems) or -їв (after a vowel or й). No fleeting vowel is needed here — the ending already provides the vowel.
| Nominative sg. | Genitive pl. | Meaning |
|---|---|---|
| стіл | столі́в | table |
| брат | браті́в | brother |
| ба́тько | батькі́в | father / parents |
| учи́тель | учителі́в | teacher |
| край | краї́в | edge / land (-їв after й) |
У ме́не нема́ батькі́в по́руч — вони́ живу́ть в і́ншому мі́сті.
My parents aren't near me — they live in another city. (ба́тько → батькі́в.)
Дру́зів у не́ї бага́то, а спра́вжніх — оди́ниці.
She has lots of friends, but real ones — just a handful. (друг → дру́зів; note г→з before -ів.)
Ending 3: -ей (feminine -ь, soft/hushing stems)
Feminine declension-III nouns (the soft-consonant -ь group), plus a set of soft masculine and hushing-stem nouns, take -ей. These are the high-frequency ones you must simply know.
| Nominative sg. | Genitive pl. | Meaning |
|---|---|---|
| ніч | ноче́й | night |
| миша́ | мише́й | mouse |
| кінь | коне́й | horse (soft masc.) |
| гість | госте́й | guest (soft masc.) |
| люди́на → лю́ди | люде́й | person → people |
| гро́ші | гро́шей | money (plurale tantum) |
На весі́лля прийшло́ сті́льки госте́й, що не вистача́ло сті́льців.
So many guests came to the wedding that there weren't enough chairs. (гість → госте́й: soft masc., -ей.)
За кі́лька ноче́й ми пройшли́ весь маршру́т.
In a few nights we covered the whole route. (ніч → ноче́й: decl. III, -ей.)
У нас обмаль гро́шей до кінця́ мі́сяця.
We're short on money until the end of the month. (гро́ші → гро́шей.)
The build-it procedure
Don't memorise a list — run this every time:
- Identify the stem and declension. Feminine -а/-я or neuter -о? → zero ending. Masculine? → -ів/-їв. Feminine -ь or soft/hushing? → -ей.
- For a zero ending, check the cluster. If dropping the vowel leaves two consonants that need a buffer, insert a fleeting vowel (е before soft/hushing/й, otherwise о): вікн → ві́кон, сестр → сесте́р.
- Apply the о/і alternation if the now-closed syllable hides an underlying о/е: нога́ → ніг, гора́ → гір, шко́ла → шкіл.
- For -ів/-їв and -ей, just attach the ending — no fleeting vowel, but watch for consonant changes (друг → дру́зів).
Source-language comparison
For an English speaker, the disorienting part is that the plural of a noun changes shape so radically and that the genitive plural sometimes has no ending at all — книг looks like a typo to an English eye, but the bare stem is the form. English marks plural and possession with audible suffixes (-s, -'s); Ukrainian does it with a mix of zero endings, inserted vowels, and vowel flips inside the word. Expect to build the form rather than just slap on a suffix.
For a Russian speaker, the endings are familiar in outline (zero, -ов/-ев↔-ів, -ей), but two things differ: Ukrainian's masculine ending is -ів/-їв (столі́в, not столо́в), and the о/і alternation is far more active (ніг, гір, шкіл, слів) than in Russian, where the vowel often stays put. Don't carry Russian's vowel over: Ukrainian says слів (not the Russian-style form) and шкіл.
Common Mistakes
❌ бага́то кни́г-и / бага́то кни́га
Incorrect — the zero ending IS the form: бага́то книг.
✅ бага́то книг
many books — bare stem, zero ending.
❌ п’ять вікн (cluster left unbroken)
Incorrect — a fleeting о breaks the cluster: п’ять ві́кон.
✅ п’ять ві́кон
five windows — fleeting vowel inserted.
❌ багато ногів / двадцять ног
Incorrect — zero ending with о→і: бага́то ніг.
✅ бага́то ніг
many legs — о→і alternation.
❌ п’ять столо́в (Russian-style ending)
Incorrect — Ukrainian masculine gen. pl. is -ів: п’ять столі́в.
✅ п’ять столі́в
five tables — -ів ending.
❌ багато людів / п’ять людин
Incorrect — the suppletive plural takes -ей: бага́то люде́й.
✅ бага́то люде́й
many people — люди → люде́й, -ей.
Key Takeaways
- The genitive plural fuses three systems: ending choice, fleeting vowels, and the о/і alternation.
- Zero ending for feminine -а/-я and neuter -о (книг, маши́н, слів) — insert a fleeting е/о to break clusters (ві́кон, сесте́р, пісе́нь).
- -ів/-їв for masculines (столі́в, браті́в, краї́в); -ей for feminine -ь and soft/hushing stems (ноче́й, коне́й, госте́й, люде́й).
- The о/і alternation surfaces in zero-ending forms: нога́ → ніг, гора́ → гір, шко́ла → шкіл, сло́во → слів.
- Run the procedure — ending → fleeting vowel → alternation — and you can derive any form instead of memorising lists.
Now practice Ukrainian
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Start learning Ukrainian→Related Topics
- Genitive Singular: FormsA2 — The genitive singular endings by declension — feminine -и/-і, neuter -а/-я, soft-feminine -і — and the famous masculine -а/-у split, where countable, animate, and short nouns take -а (бра́та, ножа́, Ки́єва) while abstract, mass, and many foreign place nouns take -у (цу́кру, снігу, Ло́ндону), a semantically-governed choice with no clean Russian parallel.
- Genitive After Numbers and QuantityB1 — When numbers and quantity words trigger the genitive — numbers 5+ (and any number ending in 5–9 or 0) take the genitive PLURAL (п’ять столі́в, де́сять книг, сто гри́вень, два́дцять ро́ків), as do quantity words бага́то, ма́ло, кі́лька, скі́льки, тро́хи; fractions and полови́на/чверть take the genitive singular (полови́на я́блука) — all contrasted with the 2/3/4 rule that takes nominative plural, plus the suppletive рік→ро́ків and люди́на→люде́й you must drill as fixed combinations.
- The О/І and Е/І AlternationA2 — Ukrainian's signature vowel swap: an о or е in a closed final syllable (one ending in a consonant) becomes і — кіт, ніч, стіл — but reverts to о/е the moment an ending opens the syllable (кота́, но́чі, стола́); the same swing runs in reverse when a zero ending closes a syllable in the genitive plural (нога́→ніг, гора́→гір).
- Hard, Soft, and Mixed Stem GroupsA2 — Almost every 'which ending?' question in Ukrainian noun declension reduces to one diagnosis: does the stem end in a hard consonant, a soft one, or a hushing ж/ч/ш/щ? Hard stems take о-endings (столо́м), soft stems take е-endings (коне́м), and mixed hushing stems pattern between them (ноже́м) — one three-way test that unlocks the whole case system.
- Noun Forms After Numbers (Preview)A2 — After a number, a Ukrainian noun changes shape three different ways: 1 takes the nominative singular, 2–4 take the nominative plural with a stress that often jumps to the ending (два столи́), and 5 and up take the genitive plural — and the 2–4 rule, using the nominative plural rather than the Russian genitive singular, is a hallmark of correct Ukrainian.
- Genitive Masculine -а vs -уB1 — The deep version of Ukrainian's hardest single ending choice — masculine genitive singular -а/-я for persons, animals, countable objects, measures, days, and native cities/rivers (бра́та, ножа́, поне́ділка, Ки́єва, Дніпра́) versus -у/-ю for abstracts, materials, collectives, processes, institutions, and most foreign places (ро́зуму, цу́кру, лі́су, університе́ту, Ло́ндону), including the minimal pairs where the ending itself changes the meaning.