Adjective agreement in oblique cases
In Russian, adjectives are 'mirrors' of nouns. When a noun changes its case ending due to a preposition or its role in a sentence, the adjective must change its ending to match.
How It Works
Russian adjectives do not have their own independent case; they follow the noun they modify, agreeing with it in gender, number, and case. This process is called падежное согласование (case agreement). These declension rules apply to attributive (long-form) adjectives; short-form adjectives do not decline by case. To become proficient in these forms, you must distinguish between stem types and animacy.
Base Nominative Endings:
Before applying oblique case rules, it helps to know the base Nominative endings:
- Masculine: -ый, -ий, -ой
- Feminine: -ая, -яя
- Neuter: -ое, -ее
- Plural: -ые, -ие
Stem Types:
- Hard Stems: End in -ый. They use vowels like о, ы, у in endings (e.g., новому, новым).
- Soft Stems: End in -ий with a soft consonant (e.g., синий). They use vowels like е, и, ю in endings (e.g., синему, синим).
- Mixed Stems: End in -ий after specific consonants (like русский or хороший). They mostly follow hard-stem patterns but change some vowels due to spelling rules.
Stressed Endings: Stress overrides the standard unstressed nominative vowels. If the masculine nominative ending is stressed, it is always -ой, even though the adjective still belongs to either a hard stem (e.g., молодой) or a mixed stem (e.g., большой).
Note: Possessive adjectives (like лисий or папин) follow their own sub-pattern.
The Accusative Rule:
- Inanimate Masculine, Singular Neuter, & Inanimate Plural: The adjective matches the Nominative form.
- Animate Masculine & Animate Plural (all genders): The adjective matches the Genitive form (e.g., животных).
- Feminine Singular: Has its own unique ending (-ую/-юю) regardless of animacy.
Other Oblique Cases:
- Masculine & Neuter Merger: These share endings in the Genitive (-ого/-его), Dative (-ому/-ему), Instrumental (-ым/-им), and Prepositional (-ом/-ем). Note: The 'г' in the Genitive endings -ого/-его is always pronounced as [v].
- Feminine Simplification: Feminine adjectives use -ой/-ей for Genitive, Dative, Instrumental, and Prepositional. Note: In the Instrumental case, standard Russian grammar also allows the alternative endings -ою/-ею, which you will frequently encounter in literature and older texts.
- Plural Uniformity: Gender distinctions disappear in the plural oblique cases. The endings are -ых/-их for Genitive and Prepositional, -ым/-им for Dative, and -ыми/-ими for Instrumental.
Spelling Rules:
- 7-Letter Rule: After г, к, х, ж, ч, ш, щ, always write и, never ы.
- 5-Letter Rule: After ж, ч, ш, щ, ц, an unstressed о becomes е (e.g., хорошего).
Examples (6)
- Я вижу <grammar expression="винительный одушевлённого мужского единственного">старого друга</grammar>.
I see an old friend.
Word by Word: I see old friend.
For masculine animate nouns in the Accusative, the adjective takes the Genitive ending -ого, where the letter 'г' is pronounced as [v].
- Она помогает <grammar expression="дательный косвенного дополнения">молодой сестре</grammar>.
She is helping her young sister.
Word by Word: She helps young sister.
Feminine adjectives simplify in oblique cases, using -ой (or -ей) for the Genitive, Dative, Instrumental, and Prepositional cases.
- Кот спит на <grammar expression="в/на + предложный места">тёплом кресле</grammar>.
The cat is sleeping on a warm armchair.
Word by Word: Cat sleeps on warm armchair.
Neuter adjectives share oblique endings with masculine ones, taking -ом (or -ем) in the Prepositional case.
- Мы рисуем <grammar expression="творительный средства">новыми карандашами</grammar>.
We are drawing with new pencils.
Word by Word: We draw with new pencils.
In the plural Instrumental case, adjectives take the ending -ыми (or -ими for soft and mixed stems).
- Он живёт в <grammar expression="в/на + предложный места">синем доме</grammar>.
He lives in a blue house.
Word by Word: He lives in blue house.
The adjective 'синий' has a true soft stem. In the Prepositional case, soft-stem adjectives use -ем instead of the hard-stem -ом.
- Она не видит <grammar expression="винительный одушевлённого множественного">маленьких детей</grammar>.
She doesn't see the small children.
Word by Word: She not sees small children.
In the plural Accusative, adjectives modifying animate nouns take the Genitive ending -ых or -их.
Common Mistakes
Using the Nominative ending for animate masculine objects in the Accusative.
Я знаю этот хороший врач.Я знаю этого хорошего врача.When a masculine noun is animate, the adjective must agree in the Accusative-Genitive form (-ого) rather than staying in the Nominative form.
Applying hard-stem endings to soft-stem adjectives.
Мы гуляем в сином лесу.Мы гуляем в синем лесу.Adjectives like 'синий' are soft-stem. You must use the soft-vowel versions of endings (e.g., -ем instead of -ом, -его instead of -ого).
Assuming all neuter adjectives match the Nominative in the Accusative case, even in the plural for animate nouns.
Мы любим все дикие животные.Мы любим всех диких животных.While singular neuter adjectives match the Nominative in the Accusative case, animate plural nouns of any gender (including neuter nouns like 'животные') require the adjective to match the Genitive plural form.
How It Connects
Learn This First
To learn adjective agreement in oblique cases, a learner must first understand the basic concept of noun cases (like the Accusative and Prepositional) and how other modifiers, such as possessive pronouns, already agree with nouns in gender and number.
- мой/твой/наш/ваш + NounPossessive Pronoun Agreement
Understanding how possessive pronouns agree with nouns in gender and number provides the conceptual foundation for adjective-noun agreement.
Level 2 - в/на + Prepositional (Location)Prepositional Location After В and На
This pattern introduces the concept of nouns changing case endings in prepositional phrases, which is the context where adjective agreement is first applied.
Level 2 - Accusative direct object
Understanding that nouns change form to indicate grammatical roles is necessary before learning how adjectives must mirror those specific case changes.
Level 1
Related Patterns
- Adjective agreement in the nominative
This is the foundation for adjective agreement, covering the basic subject forms before moving to oblique cases.
Level 2 - Animate masculine singular accusative
Adjectives modifying animate masculine nouns in the Accusative use Genitive endings (-ого/-его) instead of Nominative ones.
Level 2 - Short adjectives as predicates
Unlike the long adjectives discussed here, short-form adjectives do not decline for case and are only used as predicates.
Level 2
Learn Next
Patterns that build on this one.
- Ordinal numerals as adjectivesLevel 2
- самый + AdjectiveSuperlative with СамыйLevel 2
- которыйRelative Pronoun КоторыйLevel 3
- процент + GenitivePercent Expressions with Genitive DependentsLevel 4
- Case in compound numeralsLevel 4
- -емыйPresent Passive Participles in -емыйLevel 4
- благодаря + DativeThanks toLevel 5
- в отличие от + GenitiveUnlike or in Contrast toLevel 5
And 5 more in the full list.
Practice Adjective agreement in oblique cases in Bubblegum
Poppy, your AI tutor, writes Russian lessons at your level. Tap any grammar point in a lesson to see its full explanation.
