Russian Six Cases: Nominative, Accusative, Genitive, Dative, Instrumental, Prepositional Reference
Russian is a fusional, highly inflected language. Almost every noun, pronoun, adjective, and number changes its ending to signal its grammatical role in a sentence. There are six cases, and mastering them is the central task of intermediate Russian. Word order in Russian is famously free precisely because cases, not position, carry the grammatical load. "Brat vidit sestru" (the brother sees the sister) and "Sestru vidit brat" mean the same thing: the -у ending on сестру marks it as the direct object regardless of where it sits.
This reference lays out all six cases for the three genders in both singular and plural, explains the core semantic function of each case, gives the main prepositions that govern each, and provides memory devices. For background on gender itself - which drives the endings you see here - see the Russian gender of nouns and adjectives guide. For broader grammar orientation, start with the Russian grammar cases complete guide.
The Six Cases at a Glance
Table 1. The six cases, core functions, and typical question words.
| # | Case (Russian) | Abbrev | Core function | Question words |
|---|---|---|---|---|
| 1 | Nominative (именительный) | Nom | Subject; dictionary form | кто? что? (who? what?) |
| 2 | Genitive (родительный) | Gen | Possession, absence, of | кого? чего? |
| 3 | Dative (дательный) | Dat | Indirect object, recipient | кому? чему? |
| 4 | Accusative (винительный) | Acc | Direct object, destination | кого? что? |
| 5 | Instrumental (творительный) | Ins | Means, accompaniment | кем? чем? |
| 6 | Prepositional (предложный) | Pre | Location, topic (never alone) | о ком? о чём? где? |
Note: the traditional Russian teaching order is Nom, Gen, Dat, Acc, Ins, Pre. Most Western textbooks use the same order. The prepositional case never occurs without a preposition - hence its name.
Mnemonic (English): "Never Give Dad An Irish Pickle" - Nom, Gen, Dat, Acc, Ins, Pre.
Case-by-Case Reference
1. Nominative (именительный)
The dictionary-entry case. Used for:
- The subject of a sentence: Студент читает. (Studyent chitaet.) The student is reading.
- Naming: Это Москва. (Eto Moskva.) This is Moscow.
- The complement of "быть" in present tense (which is null): Он инженер. (On inzhener.) He is an engineer.
2. Genitive (родительный)
The workhorse case. Used for:
- Possession: книга брата (kniga brata) the brother's book.
- Absence or negation: У меня нет книги. (U menya net knigi.) I don't have a book.
- After numbers 2, 3, 4 (singular) and 5+ (plural): два студента, пять студентов.
- Quantities: чашка чая (chashka chaya) a cup of tea.
- After prepositions из, от, до, без, для, у, около, после, против, вместо.
3. Dative (дательный)
The "to" or "for" case. Used for:
- Indirect object: Я дал брату книгу. (Ya dal bratu knigu.) I gave my brother a book.
- Age: Мне двадцать лет. (Mne dvadtsat' let.) I am twenty years old.
- Impersonal constructions: Мне холодно. (Mne kholodno.) I am cold.
- After prepositions к, по.
- With verbs like помогать (to help), нравиться (to appeal to), звонить (to call).
4. Accusative (винительный)
The direct-object case. Used for:
- Direct object of a transitive verb: Я вижу дом. (Ya vizhu dom.) I see the house.
- Destination after в, на: Я иду в школу. (Ya idu v shkolu.) I'm going to school.
- Time expressions: в понедельник (v ponedel'nik) on Monday.
- After prepositions через, про, сквозь.
Key rule: For inanimate masculine nouns, accusative looks like nominative. For animate masculine nouns, accusative looks like genitive. This is the "animacy" distinction that English lacks.
5. Instrumental (творительный)
The "by means of" or "with" case. Used for:
- Tool or means: Я пишу ручкой. (Ya pishu ruchkoy.) I write with a pen.
- Accompaniment after с: с братом (s bratom) with my brother.
- Profession with быть, стать, работать: Он стал врачом. (On stal vrachom.) He became a doctor.
- After prepositions с, над, под, перед, за, между.
6. Prepositional (предложный)
Always used after a preposition. Main uses:
- Location after в, на: в доме (v dome) in the house; на столе (na stole) on the table.
- Topic after о/об: Мы говорим о Москве. (My govorim o Moskve.) We are talking about Moscow.
- After при.
Full Noun Declension Charts
Masculine nouns
Table 2. Masculine singular and plural endings. Example inanimate: стол (stol) table. Example animate: студент (studyent) student.
| Case | Sg inanimate | Sg animate | Pl inanimate | Pl animate |
|---|---|---|---|---|
| Nom | стол | студент | столы | студенты |
| Gen | стола | студента | столов | студентов |
| Dat | столу | студенту | столам | студентам |
| Acc | стол | студента | столы | студентов |
| Ins | столом | студентом | столами | студентами |
| Pre | (о) столе | (о) студенте | (о) столах | (о) студентах |
Feminine nouns
Table 3. Feminine endings for nouns in -а and -я. Example: книга (kniga) book; неделя (nedelya) week.
| Case | Sg книга | Sg неделя | Pl книги | Pl недели |
|---|---|---|---|---|
| Nom | книга | неделя | книги | недели |
| Gen | книги | недели | книг | недель |
| Dat | книге | неделе | книгам | неделям |
| Acc | книгу | неделю | книги | недели |
| Ins | книгой | неделей | книгами | неделями |
| Pre | (о) книге | (о) неделе | (о) книгах | (о) неделях |
Neuter nouns
Table 4. Neuter endings for nouns in -о and -е. Example: окно (okno) window; море (more) sea.
| Case | Sg окно | Sg море | Pl окна | Pl моря |
|---|---|---|---|---|
| Nom | окно | море | окна | моря |
| Gen | окна | моря | окон | морей |
| Dat | окну | морю | окнам | морям |
| Acc | окно | море | окна | моря |
| Ins | окном | морем | окнами | морями |
| Pre | (об) окне | (о) море | (об) окнах | (о) морях |
Soft-stem and Spelling-rule Variants
Two orthographic rules reshape endings:
Rule 1 (the 7-letter spelling rule). After Г, К, Х, Ж, Ч, Ш, Щ write И not Ы and А not Я. So "книга" becomes "книги" in nominative plural, not "книгы."
Rule 2 (the unstressed О rule). After Ж, Ч, Ш, Щ, Ц, write Е for unstressed /o/-ending positions. So instrumental of "муж" (husband) is "мужем," not "мужом."
These rules turn apparently irregular forms into predictable ones.
Adjective Agreement Across the Cases
Adjectives agree with their nouns in gender, number, and case. A sample "hard" adjective: новый (novyy) new.
Table 5. Adjective новый across singular cases.
| Case | Masculine | Feminine | Neuter |
|---|---|---|---|
| Nom | новый | новая | новое |
| Gen | нового | новой | нового |
| Dat | новому | новой | новому |
| Acc | новый/нового | новую | новое |
| Ins | новым | новой | новым |
| Pre | новом | новой | новом |
Plural for all genders:
| Case | Plural |
|---|---|
| Nom | новые |
| Gen | новых |
| Dat | новым |
| Acc | новые/новых |
| Ins | новыми |
| Pre | новых |
For deeper coverage of noun-adjective agreement, see the Russian gender guide.
Memory Mnemonics
- Ivan knows only pigs, cows, goats. I (именительный), K (not quite - use PVDRIP in another order if this one is awkward). Many learners make their own mnemonic.
- "Kto / chto" question trick. Before writing an ending, ask the question word: кто? (nom), кого? (gen/acc), кому? (dat), кем? (ins), о ком? (pre). The question word's ending matches noun endings rhythmically.
- Case meaning by preposition. Memorize prepositions with their cases, not just their meanings. "в" + accusative = motion into; "в" + prepositional = static in. The same preposition has different senses depending on case.
Common Mistakes Learners Make
- Treating the accusative as always equal to nominative. It is only for inanimate masculine and neuter singulars. Feminine singulars and animates have distinct forms.
- Forgetting the genitive after numbers. "два студента" (singular genitive), not "два студенты."
- Using nominative after prepositions. Every Russian preposition governs one or two cases; none takes nominative.
- Confusing "в + acc" (motion) with "в + pre" (location). "Я иду в школу" vs "Я в школе."
- Skipping the spelling rules. Writing "книгы" or "душой" (wrong) instead of "книги" and "душой" (correct - this one follows Rule 2 differently).
- Not learning the dative for indirect objects. English speakers tend to expect "to" + a noun; Russian uses a bare dative.
- Overlooking animate/inanimate. "Я вижу студента" not "Я вижу студент."
- Ignoring stress shift in declension. Some nouns change stress between cases (окно: sg окно́, pl о́кна).
Quick Reference: Which Preposition Takes Which Case?
| Preposition | Case | Meaning |
|---|---|---|
| у, от, из, до, без, для, около, после, против, возле | Gen | from, without, for, near |
| к, по | Dat | toward, along |
| в, на | Acc or Pre | into/onto (Acc) or in/on (Pre) |
| через, про, сквозь | Acc | through, about |
| с, над, под, перед, за, между | Ins | with, above, under |
| о, об, при | Pre | about, at |
FAQ
Why does Russian need six cases?
Because Russian marks grammatical role on the word itself rather than with fixed word order or many prepositions. This lets the speaker emphasize different elements by moving them without losing meaning.
Does the accusative always equal the genitive for animates?
In the singular, only for masculine animates. Feminine singular animates have a distinct accusative in -у. In the plural, all animates (any gender) use the genitive form for accusative.
What's the point of the prepositional case if it always needs a preposition?
The prepositional marks location (after в, на) and topic (after о). A separate case form prevents ambiguity with the accusative after the same prepositions.
Is there a seventh case in Russian?
Historical Russian had a vocative (for direct address), preserved in forms like Боже (O God) and Господи (O Lord). Modern Russian has a truncated new vocative (Маш! for Маша), but it is not part of the standard six-case paradigm.
How do I learn all six cases quickly?
Learn one case per week and drill with a single noun through all genders. Then add adjectives. Then add pronouns. Then practice with free prose. See the Russian verb aspects guide for the other half of Russian grammar.
Do pronouns decline like nouns?
Similar patterns but with irregularities. See the Russian pronouns reference.
Why do numbers trigger the genitive?
After 2/3/4, historically a dual form survived as the genitive singular. After 5+, the partitive genitive plural is used. See the Russian numbers with declension reference.
See Also
- Russian grammar cases complete guide
- Russian gender of nouns and adjectives
- Russian pronouns reference
- Russian numbers 1-100 with declension
- Russian verb aspects perfective vs imperfective
- Russian Cyrillic alphabet reference
- Russian pronunciation and stress guide
- Russian alphabet Cyrillic complete guide
Frequently Asked Questions
Why does Russian need six cases?
Russian marks grammatical role on the word itself rather than by fixed word order or by numerous prepositions. Cases allow flexible word order without losing meaning.
Does the accusative always equal the genitive for animates?
In the singular, only for masculine animate nouns. Feminine singular animate nouns have a distinct -у accusative. In the plural, all animates across genders take the genitive form as accusative.
What is the point of the prepositional case?
It always follows a preposition and marks location (after в, на) or topic (after о). A distinct form prevents confusion with the accusative after the same prepositions.
Is there a seventh case?
Historical Russian had a vocative, preserved in Боже and Господи. Modern Russian has a colloquial new vocative (Маш!), but the standard paradigm has six.
Why do numbers trigger the genitive?
After 2/3/4, a historical dual form survived as genitive singular. After 5+, the partitive genitive plural is used.
Do pronouns decline like nouns?
Similar patterns but with irregularities. See the Russian pronouns reference for full tables.
What is the easiest way to start learning cases?
Pick one noun of each gender and drill it through all six cases in singular, then plural. Add adjective agreement, then pronouns, then free prose.
