有利 (yuuri) conjugation
advantageous, better
有利 (ゆうり, yuuri) 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 | 有利だ yuurida | 有利です yuuridesu | The form you look up. Also the casual “is ~”. |
| Negative | 有利じゃない yuurijanai | 有利じゃないです yuurijanaidesu | “is not ~”. |
| Past | 有利だった yuuridatta | 有利でした yuurideshita | “was ~”. |
| Past negative | 有利じゃなかった yuurijanakatta | 有利じゃなかったです yuurijanakattadesu | “was not ~”. |
| Te-form | 有利で yuuride | — | Links to the next clause: “~ and …”. |
| Adverb | 有利に yuurini | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 有利な〜 yuurina〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 有利なら yuurinara | — | “if it is ~”. |
| Conditional (~たら) | 有利だったら yuuridattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 有利になる yuurininaru | 有利になります yuurininarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 有利すぎる yuurisugiru | 有利すぎます yuurisugimasu | “too ~”. |
| Looks ~ (~そう) | 有利そう yuurisou | 有利そうです yuurisoudesu | “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.