優美 (yuubi) conjugation
grace, refinement, elegance
優美 (ゆうび, yuubi) is a na-adjective. Na-adjectives behave like nouns. The word itself never changes — you conjugate だ/です after it, and you need な to put it in front of a noun.
Conjugation table
| Form | Plain (casual) | Polite (~です) | When you use it |
|---|---|---|---|
| Dictionary / plain | 優美だ yuubida | 優美です yuubidesu | The form you look up. Also the casual “is ~”. |
| Negative | 優美じゃない yuubijanai | 優美じゃないです yuubijanaidesu | “is not ~”. |
| Past | 優美だった yuubidatta | 優美でした yuubideshita | “was ~”. |
| Past negative | 優美じゃなかった yuubijanakatta | 優美じゃなかったです yuubijanakattadesu | “was not ~”. |
| Te-form | 優美で yuubide | — | Links to the next clause: “~ and …”. |
| Adverb | 優美に yuubini | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 優美な〜 yuubina〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 優美なら yuubinara | — | “if it is ~”. |
| Conditional (~たら) | 優美だったら yuubidattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 優美になる yuubininaru | 優美になります yuubininarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 優美すぎる yuubisugiru | 優美すぎます yuubisugimasu | “too ~”. |
| Looks ~ (~そう) | 優美そう yuubisou | 優美そうです yuubisoudesu | “looks / seems ~” from appearance. |
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Why it conjugates this way
Na-adjectives behave like nouns. The word itself never changes — you conjugate だ/です after it, and you need な to put it in front of a noun.
See the full rules in the adjective conjugation guide.