Adjective Agreement in All Cases

A Ukrainian noun phrase is a chain of agreement. The head noun chooses a gender (fixed) and a case (set by its role in the sentence), and then every word that modifies it — a possessive (мій), a demonstrative (цей), one adjective or several (нови́й, украї́нський) — copies that gender, number, and case. The phrase у тій вели́кій нові́й украї́нській кни́жці has five words, and all five sit in the feminine locative singular at once. For an English speaker, where adjectives never change shape at all, this is the central new skill: producing a correct multi-word phrase means inflecting every word in it identically. This page declines a full phrase through all seven cases, singular and plural, and shows the agreement chain in motion.

The agreement chain: one head, many followers

The noun is the boss. It owns the gender permanently and takes a case from its job in the sentence. Everything in front of it must match on three axes simultaneously: gender, number, case. There is no "agree on case but not gender" — it is all or nothing, every modifier, every time.

Consider the phrase мій нови́й украї́нський друг "my new Ukrainian friend." Four words: a possessive, two adjectives, a noun. In the nominative they read мій нови́й украї́нський друг. Move the phrase into any other case and all four shift together:

Full declension of мій нови́й украї́нський друг (singular)

Here is the whole phrase through all seven singular cases. Watch how the possessive, both adjectives, and the noun all carry matching endings in each row. (друг is masculine animate, so its accusative copies the genitive.)

Two things to read off this table. First, the adjective endings move in lockstep: -ого in the genitive (ново́го, украї́нського), -ому in the dative and locative (ново́му, украї́нському), -им in the instrumental (нови́м, украї́нським). Both adjectives always wear the same ending — that is the chain. Second, the noun follows its own (second-declension) pattern (дру́га, дру́гові, дру́гом, дру́же), which doesn't look like the adjective endings — but the case is the same across the whole phrase, which is what matters.

Full declension in the plural

In the plural, gender disappears — masculine, feminine, and neuter share one set of plural endings. So the chain gets simpler: every modifier takes the plural ending for that case. Here is мої́ нові́ украї́нські дру́зі "my new Ukrainian friends" (note the к → з alternation in the noun: друг → дру́зі):

The plural adjective endings to internalise: -і (nom), -их (gen/loc/acc-animate), -им (dat), -ими (instr). Again both adjectives share whatever the row demands.

Stacking a demonstrative on top: тій вели́кій нові́й кни́жці

The chain extends to as many modifiers as you like. Add a demonstrative (той / цей) in front, and it joins the agreement just like everything else. The classic five-word feminine phrase у тій вели́кій нові́й украї́нській кни́жці "in that big new Ukrainian book" has a demonstrative, three adjectives, and a noun, all five in the feminine locative singular:

Every modifier ends in feminine-locative -ій; the noun takes its own locative -ці (with the к → ц alternation: кни́жка → кни́жці). Five words, one case.

Hard vs soft adjectives in the chain

One wrinkle: an adjective's stem type decides which series of endings it uses, but not the case it agrees in. A hard adjective (нови́й) takes -ого / -ому / -им; a soft one (си́ній, дома́шній) takes the front series -ього / -ьому / -ім. In a mixed phrase, each adjective uses its own series — but they still agree in the same case. So "my new blue notebook" in the instrumental is мої́м нови́м си́нім зо́шитом — нови́м (hard -им) and си́нім (soft -ім) sit side by side, both instrumental.

The full ending series live on the hard-stem and soft-stem pages; the point here is that stem type changes the spelling of the ending, never the agreement.

Source-language comparison

For an English speaker, this is the single biggest grammatical shift in the noun phrase. English adjectives are invariant — my new Ukrainian friend / friends / friend's keeps the same new and Ukrainian throughout. Ukrainian re-inflects every modifier for gender, number, and case at once, so a phrase you'd say with two frozen adjectives becomes a phrase where four words change shape together. The skill is not learning the endings once — it is learning to run the whole chain: pick the case from the noun's role, then re-end every word before the noun. Until that becomes automatic, build the phrase noun-first: settle the noun's case, then walk backwards stamping the same case on each modifier.

For a Russian speaker, the agreement system is structurally identical — gender/number/case concord across the whole phrase transfers wholesale — so the work is purely the Ukrainian forms: -ого/-ому/-им where the underlying logic matches but the spelling and stress are Ukrainian (мого́, моє́му, мої́м, not the Russian shapes), the soft series -ього/-ьому/-ім, and noun alternations like друг → дру́зі, кни́жка → кни́жці. Don't import Russian endings into a correct-looking Ukrainian chain.

Common Mistakes

Key Takeaways

• A Ukrainian noun phrase is a chain: every modifier (possessive, demonstrative, adjective) agrees with the head noun in gender, number, AND case at once.
• Decide the case from the noun's role, then stamp it on every word in front of the noun — you never inflect the adjectives independently.
• The masculine/neuter singular adjective endings: -ого (gen/acc-anim), -ому (dat/loc), -им (instr); the plural: -і / -их / -им / -ими.
• You can stack many modifiers (у тій вели́кій нові́й украї́нській кни́жці = five words, one case); they all move together.
• Stem type (hard нови́м vs soft си́нім) changes the spelling of the ending, never the case the word agrees in.