The genitive (родо́вий відмі́нок) is the most heavily used of Ukrainian's oblique cases — it carries "of," possession, absence, the object of negation, quantities, and a long list of prepositions. Before you can use it, you need its forms, and this page builds them declension by declension. Most of it is clean and rule-governed. One corner of it — the masculine -а / -у split — is genuinely hard, semantically driven, and famously fumbled even by good textbooks, so it gets the spotlight here. Learn the regular endings first; then meet the one decision that takes real practice.
What the genitive answers
The genitive answers кого́? ("of whom?") and чого́? ("of what?"). If you can frame a slot with "of …" or "no …" or "from …," it's pointing at the genitive.
Це обкла́динка кни́ги, а не журна́лу.
This is the cover of the book, not of the magazine. (кни́ги and журна́лу — both genitive, answering чого́?)
Feminine Declension I: -и / -і
Feminine nouns in -а/-я replace the ending with -и (hard stems) or -і (soft and hushing stems). This is the same hard/soft/mixed logic from the stem-groups page: hard → back vowel -и, soft/hushing → front vowel -і.
| Stem | Nominative | Genitive | Meaning |
|---|---|---|---|
| hard | кни́га | кни́ги | book |
| hard | шко́ла | шко́ли | school |
| soft | земля́ | землі́ | land |
| soft | пі́сня | пі́сні | song |
| hushing (mixed) | душа́ | душі́ | soul |
| hushing (mixed) | межа́ | межі́ | boundary |
Без му́зики, без пі́сні я не уявля́ю свого́ життя́.
Without music, without song, I can't imagine my life. (му́зики hard → -и; пі́сні soft → -і.)
До шко́ли йти́ десять хвили́н, але́ я завжди́ запі́знююся.
It's a ten-minute walk to school, but I'm always late. (до шко́ли — the preposition до always takes the genitive; шко́ла → шко́ли.)
Note the consistency: feminine hushing stems behave like soft stems in the genitive singular and take -і — душа́ → душі́, межа́ → межі́, гру́ша → гру́ші. (This is the genitive singular; don't confuse it with the plural, where the same stems also take -і: ду́ші, гру́ші.) The safe habit is to learn the genitive together with the word.
Neuter Declension II: -а / -я
Neuter nouns in -о/-е swap the ending for -а (hard) or -я (soft).
| Nominative | Genitive | Meaning |
|---|---|---|
| вікно́ | вікна́ | window |
| мо́ре | мо́ря | sea |
| по́ле | по́ля | field |
| село́ | села́ | village |
Біля мо́ря пові́яло прохоло́дою, і ми наре́шті ви́спалися.
By the sea a cool breeze picked up, and we finally got a good sleep. (біля мо́ря — біля takes genitive; мо́ре → мо́ря.)
Із того́ вікна́ ви́дно весь сад.
You can see the whole garden from that window. (із вікна́ — genitive after із; вікно́ → вікна́.)
Feminine Declension III (soft -ь): -і
The soft-consonant feminines — ніч, сіль, тінь — take -і in the genitive. This is also where the о/і alternation often surfaces, as the closed syllable opens.
| Nominative | Genitive | Meaning |
|---|---|---|
| ніч | но́чі | night (і→о: ні→но) |
| сіль | со́лі | salt (і→о) |
| тінь | ті́ні | shadow |
| осінь | о́сені | autumn (fleeting vowel drops) |
До но́чі лиши́лося кілька годи́н, а ми ще не зібра́лися.
There are a few hours until nightfall, and we still haven't packed. (до но́чі — genitive; ніч → но́чі, the і opens to о.)
У ка́ві нема́ со́лі, не хвилю́йся.
There's no salt in the coffee, don't worry. (нема́ со́лі — нема́ 'there isn't' takes genitive; сіль → со́лі.)
Masculine Declension II: the famous -а / -у split
Now the hard part. Masculine nouns in the genitive singular choose between -а / -я and -у / -ю, and the choice is not decided by the stem's sound — it's decided by the noun's meaning. This is one of the trickiest single points in Ukrainian grammar, and it has no identical rule in Russian, so it must be learned in its own right.
The working rule:
- Concrete, countable, and animate nouns → -а / -я. Anything you can count, anything alive, most tools, body parts, and units of measure.
- Abstract, mass, collective nouns, and many place/institution names → -у / -ю. Materials and substances, feelings and processes, collections, and a large set of geographic and abstract nouns.
| Takes -а / -я (countable, animate, concrete) | Takes -у / -ю (abstract, mass, collective) |
|---|---|
| брат → бра́та (brother — animate) | цу́кор → цу́кру (sugar — substance) |
| ніж → ножа́ (knife — countable tool) | сніг → сні́гу (snow — mass) |
| стіл → стола́ (table — countable) | хліб → хлі́ба ~ хлі́бу (bread — mass; both occur) |
| оліве́ць → олівця́ (pencil) | ві́тер → ві́тру (wind) |
| кінь → коня́ (horse — animate) | страх → стра́ху (fear — abstract) |
У ме́не нема́ бра́та, ті́льки сестра́.
I don't have a brother, only a sister. (брат → бра́та — animate, so -а.)
Купи́, будь ла́ска, кілогра́м цу́кру і па́чку ча́ю.
Buy a kilo of sugar and a packet of tea, please. (цу́кру — substance, so -у; ча́ю — substance, so -ю.)
Цьогорі́ч сні́гу ви́пало сті́льки, що пере́крило доро́гу.
This year so much snow fell that it blocked the road. (сніг → сні́гу — mass noun, -у.)
Place names split the same way — and here it bites
The split reaches geographic names, and this is where even confident learners stumble. Ukrainian cities and many native places tend to take -а (Ки́їв → Ки́єва, Льві́в → Льво́ва, Ха́рків → Ха́ркова), while many foreign and larger/abstracter places take -у (Ло́ндон → Ло́ндону, Пари́ж → Пари́жу, Єги́пет → Єги́пту).
| Place → genitive -а | Place → genitive -у |
|---|---|
| Ки́їв → Ки́єва | Ло́ндон → Ло́ндону |
| Льві́в → Льво́ва | Пари́ж → Пари́жу |
| Ха́рків → Ха́ркова | Єги́пет → Єги́пту |
| Терно́піль → Терно́поля | Кита́й → Кита́ю |
Вона́ з Ки́єва, а її́ чоло́вік із Ло́ндону.
She's from Kyiv, and her husband is from London. (Ки́єва -а vs Ло́ндону -у — the classic minimal pair.)
Лист прийшо́в зі Льво́ва, а ли́стівка — з Пари́жу.
The letter came from Lviv, and the postcard from Paris. (Льво́ва -а vs Пари́жу -у.)
Why this is genuinely hard — and where to get the full rule
Be honest with yourself: there are gray-zone words that allow both endings (хліб → хлі́ба or хлібу, дім → до́му), and a handful of arbitrary lexical exceptions you simply memorise. The countable/animate-vs-mass/abstract rule gets you ~80% of the way, but the remaining cases are why this topic has its own full treatment. The complete rule, the exception lists, and the meaning-shifting pairs (where -а vs -у actually changes what the word means) are on the masculine genitive -а vs -у page and the decision-guide choosing -а vs -у. Treat this section as the orientation; treat those as the manual.
The о / і alternation surfaces in the genitive
A recurring bonus pattern: masculine and feminine nouns whose nominative has a closed-syllable і (стіл, ніж, ніч) reveal the underlying о/е when the genitive ending opens the syllable. This is the same mechanism explained on the closed-syllable alternation page.
| Nominative (closed → і) | Genitive (open → о/е) |
|---|---|
| стіл | стола́ |
| ніж | ножа́ |
| ніч | но́чі |
| Ки́їв | Ки́єва |
Ні́жка стола́ хита́ється — тре́ба підкрути́ти.
The table leg is wobbly — it needs tightening. (стіл → стола́: the і opens back to о, and the noun is countable, so -а.)
Source-language comparison
For an English speaker, the genitive itself is the easy part — it maps onto English "of" and "'s," and to the word from after many prepositions. The hard part is the -а/-у split, which has no English analogue whatsoever: English doesn't change "brother" vs "sugar" based on countability. The good news is the underlying intuition — count nouns vs mass nouns — is one English does have (you say "a brother / two brothers" but not "two sugars" for the substance), so you can lean on that intuition to predict the ending.
For a learner from Russian, this page contains the trap to take most seriously. Russian also has a masculine genitive in -а and a partitive-ish -у (са́хара / са́хару), but the Ukrainian distribution is different and more grammaticalised, and the place-name behaviour (Ки́єва vs Ло́ндону) follows Ukrainian's own pattern. Do not assume the Russian ending transfers: Ukrainian says цу́кру, сні́гу, стра́ху where you must actively pick -у, and бра́та, ножа́, Ки́єва with -а. Re-learn the split as a Ukrainian rule, not a borrowed one.
Common Mistakes
❌ кілогра́м цу́кра (countable-style -а on a substance)
Incorrect — substances take -у in the genitive: кілогра́м цу́кру.
✅ кілогра́м цу́кру
a kilo of sugar — mass noun, -у.
❌ нема́ бра́ту (abstract-style -у on an animate noun)
Incorrect — animate, countable nouns take -а: нема́ бра́та.
✅ нема́ бра́та
there's no brother — animate, -а.
❌ з Ки́єву / з Ло́ндона (place-name endings swapped)
Incorrect — Ukrainian cities take -а (Ки́єва), many foreign places take -у (Ло́ндону).
✅ з Ки́єва, з Ло́ндону
from Kyiv, from London — -а vs -у.
❌ без пі́сни (hard -и on a soft feminine)
Incorrect — soft-stem feminines take -і: без пі́сні.
✅ без пі́сні
without a song — soft stem, -і.
❌ стіла (keeping the closed-syllable і)
Incorrect — the і opens to о when the genitive ending is added: стола́.
✅ стола́
of a/the table — і→о, countable so -а.
Key Takeaways
- The genitive answers кого́? / чого́? and is Ukrainian's busiest oblique case.
- Feminine I: hard → -и (кни́ги), soft/hushing → -і (землі́, межі́). Neuter II: -а/-я (вікна́, мо́ря). Feminine III: -і (но́чі, со́лі).
- Masculine II splits -а/-у by meaning: countable/animate/concrete and Ukrainian cities → -а (бра́та, ножа́, Ки́єва); abstract/mass/collective and many foreign places → -у (цу́кру, сні́гу, Ло́ндону).
- The -а/-у split is genuinely hard, has gray-zone and meaning-shifting cases, and is not identical to Russian — give it dedicated study via the -а vs -у page.
- The о/і alternation surfaces here as the closed syllable opens: стіл → стола́, ніж → ножа́, ніч → но́чі.
Now practice Ukrainian
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Start learning Ukrainian→Related Topics
- The Seven Cases: OverviewA1 — Ukrainian has SEVEN cases — nominative, genitive, dative, accusative, instrumental, locative, and a living vocative — each marked by an ending on the noun rather than by word order, so the same job English does with prepositions and position, Ukrainian does with the word's tail.
- 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.
- 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.
- Genitive Masculine -а vs -уB1 — The decision page for the masculine genitive singular -а/-я vs -у/-ю. Concrete countable objects, people, animals, units, days/months and native cities/rivers take -а/-я (бра́та, ножа́, Ки́єва, поне́ділка); abstracts, materials, collectives, feelings, processes, institutions and foreign places take -у/-ю (цу́кру, ро́зуму, лі́су, університе́ту, Ло́ндону). With a sorting drill and the minimal pairs to memorise.
- 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).
- Genitive: Possession and 'of'A2 — How Ukrainian shows possession and the English 'of' relationship — by putting the owner in the genitive AFTER the thing owned (кни́га бра́та 'the brother's book', центр мі́ста 'the centre of the city'), with no apostrophe-s and no separate word for 'of', and with the WHOLE possessor phrase declining (маши́на мого́ дру́га), contrasted with possessive pronouns like мій/твій that agree instead.