The genitive case (роди́тельный паде́ж, rodítelny padézh) is among the most frequently used cases in Russian — it marks possession ("the brother's book"), absence ("there is no time"), quantity ("a lot of money"), and follows a long list of prepositions and numbers. Because it does so much, you meet its forms constantly, and the animate accusative borrows them too. The singular endings are clean and quickly learned. The plural, however, is the single hardest ending set in the whole language: it has three competing patterns and a famous "zero ending" that drops fleeting vowels into the stem. This page gives you the singular paradigm and then a decision procedure for the plural, so you can derive most forms instead of memorizing lists.
Genitive singular: the easy half
The singular splits cleanly by declension. Masculine and neuter nouns take -а/-я; feminine -а/-я nouns take -ы/-и; feminine -ь nouns take -и.
| Type | Nominative → Genitive sg | Ending |
|---|---|---|
| Masc. hard | стол → стола́ | -а |
| Masc. soft (-й) | музе́й → музе́я | -я |
| Masc. soft (-ь) | слова́рь → словаря́ | -я |
| Masc. animate | геро́й → геро́я | -я |
| Neuter -о | окно́ → окна́ | -а |
| Neuter -е | мо́ре → мо́ря | -я |
| Fem. -а | кни́га → кни́ги | -ы → -и (see below) |
| Fem. -я | неде́ля → неде́ли | -и |
| Fem. -ь | ночь → но́чи | -и |
Э́то кни́га моего́ бра́та.
This is my brother's book. — брат → бра́та, genitive of possession (also the animate accusative form).
У нас нет вре́мени.
We have no time. — genitive вре́мени after нет (absence).
Я не зна́ю э́того музе́я.
I don't know this museum. — музе́й → музе́я, soft masculine -я.
The 7-letter spelling rule on the feminine -а
Feminine hard -а nouns "should" take -ы, and many do (ко́мната → ко́мнаты, газе́та → газе́ты). But after the seven letters г, к, х, ж, ш, ч, щ, Russian forbids -ы and writes -и instead. This is why кни́га → кни́ги, not *кни́гы — the stem ends in -г.
У меня́ нет э́той кни́ги.
I don't have this book. — кни́га → кни́ги: the stem ends in -г, so the 7-letter rule gives -и, not -ы.
Здесь нет ни одно́й газе́ты.
There isn't a single newspaper here. — газе́та → газе́ты: ordinary hard -ы (stem ends in -т).
Genitive plural: the three-way split
Now the hard part. The genitive plural has three endings, and which one a noun takes is mostly predictable from its gender and how its stem ends. Do not memorize a word list — learn the decision:
- -ов / -ев → for masculine nouns ending in a hard consonant (-ов) or in -й / soft (-ев).
- -ей → for nouns whose stem ends in a soft consonant or in the hushing consonants ж, ш, ч, щ, plus all feminine -ь nouns.
- Zero ending (nothing added) → for feminine -а/-я and neuter -о/-е nouns — often with a fleeting vowel inserted to break the resulting consonant cluster.
| Pattern | Applies to | Examples (nom pl → gen pl) |
|---|---|---|
| -ов / -ев | masc. hard / masc. soft (-й) | столы́ → столо́в, музе́и → музе́ев |
| -ей | masc./fem. soft, ж/ш/ч/щ stems, fem. -ь | ножи́ → ноже́й, словари́ → словаре́й, но́чи → ноче́й |
| zero | fem. -а/-я, neuter -о/-е | кни́ги → книг, о́кна → о́кон, неде́ли → неде́ль |
Pattern 1: masculine -ов / -ев
Hard-consonant masculines add -ов; those ending in -й (and certain soft stems) add -ев. Watch for fleeting vowels dropping out of the stem (оте́ц → отцо́в):
В го́роде мно́го столо́в и стульев в э́том кафе́.
There are many tables and chairs in this café. — стол → столо́в (-ов); стул → сту́льев (-ев).
В Москве́ мно́го музе́ев.
There are many museums in Moscow. — музе́й → музе́ев (-й stem takes -ев).
У отцо́в свои́ забо́ты.
Fathers have their own worries. — оте́ц → отцо́в: the fleeting -е- drops out before -ов.
Pattern 2: -ей
Stems ending in a soft consonant or in ж, ш, ч, щ, plus all feminine -ь nouns, take -ей:
В я́щике нет ноже́й.
There are no knives in the drawer. — нож → ноже́й (-ж stem takes -ей).
Мне ну́жно купи́ть не́сколько словаре́й.
I need to buy several dictionaries. — слова́рь → словаре́й (soft masculine -ь).
Зимо́й быва́ет мно́го холо́дных ноче́й.
In winter there are many cold nights. — ночь → ноче́й (feminine -ь).
На э́том побере́жье нет море́й, то́лько озёра.
There are no seas on this coast, only lakes. — мо́ре → море́й (neuter soft stem takes -ей, not zero).
Pattern 3: the zero ending (the famous one)
Feminine -а/-я and neuter -о/-е nouns add nothing — they simply drop the final vowel of the nominative. The catch is that this often leaves an awkward consonant cluster at the end, so Russian inserts a fleeting vowel (о or е) to make it pronounceable:
| Nominative | Genitive plural | What happens |
|---|---|---|
| кни́га | книг | just drop -а (no cluster) |
| ме́сто | мест | just drop -о |
| неде́ля | неде́ль | drop -я, keep the soft sign |
| окно́ | о́кон | insert fleeting -о- (кн → кон) |
| де́вушка | де́вушек | insert fleeting -е- (шк → шек) |
| сестра́ | сестёр | insert fleeting -ё- (стр → стёр) |
У меня́ мно́го книг до́ма.
I have many books at home. — кни́га → книг: clean zero ending, no fleeting vowel needed.
В до́ме не́сколько о́кон.
There are several windows in the house. — окно́ → о́кон: fleeting -о- breaks the кн cluster, and stress shifts back.
На фотогра́фии пять де́вушек.
There are five girls in the photo. — де́вушка → де́вушек: fleeting -е- inserted before the final consonant.
У меня́ две сестры́, но сейча́с обе́их сестёр нет до́ма.
I have two sisters, but right now both sisters are away. — сестра́ → сестёр (gen. pl.), with fleeting -ё-.
When and where the fleeting vowel appears (and which of о/е/ё it is) follows from the stem; it is the subject of its own page, fleeting vowels.
Soft-stem feminine -ия / neuter -ие → -ий
A special, very regular sub-case: feminine nouns in -ия and neuter nouns in -ие form the genitive plural in -ий (the soft sign of the zero ending becomes -й):
В програ́мме сего́дня пять ле́кций.
There are five lectures on today's schedule. — ле́кция → ле́кций.
В э́том кварта́ле мно́го но́вых зда́ний.
There are many new buildings in this district. — зда́ние → зда́ний (-ие → -ий).
The irregulars worth knowing early
A few extremely common nouns do not follow the patterns and must be memorized:
| Nominative | Genitive plural | Note |
|---|---|---|
| челове́к (person) | люде́й | suppletive — but пять челове́к after numbers |
| ребёнок (child) | дете́й | suppletive plural дети → дете́й |
| друг (friend) | друзе́й | stem changes to друзь- |
| год (year) | лет | uses лет after numbers (пять лет) |
На пло́щади бы́ло мно́го люде́й.
There were many people in the square. — челове́к → люде́й (suppletive).
Здесь рабо́тает пять челове́к.
Five people work here. — after a number, челове́к keeps the count form пять челове́к, not *пять люде́й.
Мне два́дцать пять лет.
I am twenty-five years old. — after numbers, год → лет (suppletive).
The челове́к / люде́й split is a genuine learner trap: "many people" is мно́го люде́й, but "five people" is пять челове́к. There is no logic to derive here — it is a fixed quirk of two of the most common words in the language, and you simply learn both forms.
How this differs from English
English shows the genitive in two thin ways: the possessive ('s / s') and the preposition "of." We say "the roof of the houses" or "five books" with no change to houses or books themselves. Russian instead inflects the noun for the genitive in all these roles, and the genitive plural carries all the morphological richness English long ago shed. The closest English memory is irregular plurals like mouse → mice or child → children — exactly the kind of unpredictability that survives in Russian's люде́й and дете́й. The difference is that Russian asks this of every noun, every time the meaning is "of / absence / quantity," not just a handful of leftovers.
Common Mistakes
❌ У меня́ нет кни́гы.
Incorrect — the 7-letter rule blocks -ы after г; the genitive singular of кни́га is кни́ги.
✅ У меня́ нет кни́ги.
I don't have the book. — кни́га → кни́ги (-и after -г).
❌ В го́роде мно́го музе́ёв.
Incorrect — -й masculine stems take -ев, not a doubled -ёв; the genitive plural is музе́ев.
✅ В го́роде мно́го музе́ев.
There are many museums in the city. — музе́й → музе́ев.
❌ В до́ме пять окно́в.
Incorrect — neuter -о nouns take a ZERO genitive plural with a fleeting vowel, not -ов; окно́ → о́кон.
✅ В до́ме пять о́кон.
There are five windows in the house. — окно́ → о́кон (zero ending + fleeting -о-).
❌ Я люблю́ мои́х друго́в.
Incorrect — друг has a suppletive stem in the plural; the genitive plural is друзе́й.
✅ Я люблю́ мои́х друзе́й.
I love my friends. — друг → друзе́й.
❌ Здесь рабо́тает пять люде́й.
Incorrect — after a number челове́к keeps the count form челове́к; люде́й is used with non-numeric quantifiers (мно́го люде́й).
✅ Здесь рабо́тает пять челове́к.
Five people work here. — пять челове́к (count form).
Key Takeaways
- The genitive singular is regular: masc/neuter -а/-я (стола́, окна́, музе́я, мо́ря), feminine -а/-я -ы/-и (кни́ги, неде́ли), feminine -ь -и (но́чи). The 7-letter rule forces -и after г к х ж ш ч щ (кни́ги, not *кни́гы).
- The genitive plural is the hardest ending set in Russian — a three-way split: -ов/-ев (masculine: столо́в, музе́ев, отцо́в), -ей (soft / ж-ш-ч-щ stems and fem. -ь: ноже́й, словаре́й, ноче́й, море́й), and a zero ending (fem. -а/-я, neuter -о/-е: книг, мест, неде́ль).
- The zero ending often inserts a fleeting vowel to break a consonant cluster (окно́ → о́кон, де́вушка → де́вушек, сестра́ → сестёр).
- Nouns in -ия/-ие form the genitive plural in -ий (ле́кций, зда́ний).
- Memorize the irregulars: люде́й but пять челове́к, дете́й, друзе́й, and лет (after numbers).
Now practice Russian
Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.
Start learning Russian→Related Topics
- The Animacy Rule in the AccusativeA2 — The single rule that shapes the Russian accusative: animate objects (people, animals) copy the genitive, inanimate objects (things) copy the nominative. It bites in exactly two places — the masculine singular (ви́жу стол vs ви́жу студе́нта) and the plural of every gender (ви́жу столы́ vs ви́жу студе́нтов/же́нщин/дете́й). Feminine -а/-я singulars are the exception: they take -у/-ю either way. A few nouns are grammatically animate against common sense (ку́кла, ферзь, мертве́ц).
- Accusative: FormsA1 — The accusative (вини́тельный паде́ж) is the case of the direct object, but it has almost no endings of its own — only feminine -а/-я nouns get a distinct ending (-у/-ю: кни́га→кни́гу). Everything else borrows: inanimate nouns copy the nominative (стол, окно́), animate nouns copy the genitive (бра́та), and feminine -ь nouns don't move at all (ночь→ночь). The form of 'I see X' depends on X's gender and whether it is alive.
- Fleeting Vowels (Беглые гласные)A2 — An о, е, or ё that appears in one form of a noun and vanishes in another — оте́ц→отца́, день→дня, ку́сок→куска́ — and the mirror-image insertion of a vowel in the genitive plural — окно́→о́кон, сестра́→сестёр; once you see that the vowel drops before vowel-initial endings in masculines and is inserted before the zero genitive-plural ending in feminines and neuters, the whole pattern becomes predictable.
- Hard-Stem vs Soft-Stem NounsA2 — Every Russian noun stem ends in either a hard consonant (стол, кни́га, окно́) or a soft one (слова́рь, неде́ля, мо́ре, музе́й), and that single fact decides which of two parallel ending-sets the noun takes throughout its declension — -ом vs -ём/-ем, -ой vs -ей, -е vs -е but -ии after -ия/-ие; identifying the stem type is the first move in declining any noun, and the -ия/-ие/-ий nouns that take -ии in both dative and prepositional singular are the single most-missed rule.
- Genitive: Possession and 'of'A2 — The genitive's flagship job: expressing both the English possessive ('s) and the preposition 'of' at once. There is no apostrophe and no separate 'of' word — possession is shown purely by putting the owner in the genitive AFTER the thing owned: маши́на отца́ (father's car / the car of the father), центр го́рода (the centre of the city). The whole possessor phrase declines, not just its head.
- The Russian Case System: OverviewA1 — Russian has six cases — имени́тельный (nominative), роди́тельный (genitive), да́тельный (dative), вини́тельный (accusative), твори́тельный (instrumental), and предло́жный (prepositional) — and each one is signalled by a change to the noun's ending. This page is your bird's-eye view: the name of each case, the question it answers, the one-line job it does, and one noun (журна́л, magazine) shown running through all six so you can see the whole system at once.