Adjective Case Agreement

Ukrainian adjectives do not have a fixed form. Their endings shift based on the grammatical role of the noun they modify. These 'oblique cases' (all cases except the Nominative) are essential for showing how words relate to each other in a sentence.

1. Masculine and Neuter Singular:
Neuter adjectives share the masculine pattern specifically in the Genitive, Dative, Instrumental, and Locative cases. For hard stems (e.g., новий - new), the endings are: Genitive -ого (нового - of the new), Dative -ому (новому - to the new), Instrumental -им (новим - with the new), and Locative -ому/-ім (на новому/на новім - on the new). Note that the Locative case always requires a preposition (like у/в, на, при). Soft stems (e.g., синій - blue) use the soft sign in most oblique cases: Genitive -ього (синього - of the blue), Dative -ьому (синьому - to the blue), and Locative -ьому/-ім (на синьому/на синім - on the blue). However, the Instrumental case uses -ім (синім - with the blue) without a soft sign, as the softness is indicated by the vowel 'і'.

2. Feminine Singular:
In the feminine singular, the Dative and Locative cases share the same ending: -ій (e.g., гарній дівчині - to/on the pretty girl). In the Accusative case, they end in -у for hard stems (гарну - pretty) and -ю for soft stems (синю - blue). In the Instrumental case, they end in -ою for hard stems and -ьою for soft stems (e.g., гарною мовою - with beautiful language, синьою стрічкою - with a blue ribbon). The Genitive ending is -ої (hard) or -ьої (soft). For j-stems (ї-stems, e.g., безкраїй - endless), the stem ends in 'й' (безкрай-). They belong to the soft group and take soft endings, but because orthographic rules prohibit a soft sign after 'й', they are spelled as -йої in the Genitive and -йою in the Instrumental (e.g., безкрайою - with the endless). In the Dative and Locative, the ending -ій combines with the stem's 'й' to form -їй (e.g., безкраїй).

3. Plural Forms:
In the plural, gender distinctions disappear. Hard stems use: Genitive/Locative -их, Dative -им, and Instrumental -ими. Soft stems use: Genitive/Locative -іх, Dative -ім, and Instrumental -іми. J-stems (ї-stems) take -їх, -їм, and -їми (e.g., безкраїх - of the endless).

4. The Accusative Case and Animacy:
For masculine singular and all plural adjectives, the Accusative form depends on whether the noun is alive (animate) or not (inanimate):

• Inanimate: Matches the Nominative (бачу новий стіл - I see a new table).
• Animate: Matches the Genitive (бачу нового друга - I see a new friend).

Neuter adjectives in the Accusative always match the Nominative, regardless of animacy (e.g., бачу мале хлопча - I see a little boy). Feminine singular adjectives do not change based on animacy; they always take -у or -ю in the Accusative case regardless of whether the noun is alive.

5. The Vocative Case:
When addressing someone or something, adjectives in the Vocative case always take the same form as the Nominative (e.g., дорогий друже! - dear friend!).

6. Mixed Group and Possessives:
Adjectives in the mixed group (ending in -лиций - -faced) take a unique mix of hard and soft endings (e.g., Genitive singular білолицього, but Nominative plural білолиці). Possessive adjectives (like мамин - mom's, батьків - father's) take standard hard-stem endings in all oblique cases.