勇敢 (yuukan) conjugation
bravery, heroism, gallantry
勇敢 (ゆうかん, yuukan) 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 | 勇敢だ yuukanda | 勇敢です yuukandesu | The form you look up. Also the casual “is ~”. |
| Negative | 勇敢じゃない yuukanjanai | 勇敢じゃないです yuukanjanaidesu | “is not ~”. |
| Past | 勇敢だった yuukandatta | 勇敢でした yuukandeshita | “was ~”. |
| Past negative | 勇敢じゃなかった yuukanjanakatta | 勇敢じゃなかったです yuukanjanakattadesu | “was not ~”. |
| Te-form | 勇敢で yuukande | — | Links to the next clause: “~ and …”. |
| Adverb | 勇敢に yuukanni | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 勇敢な〜 yuukanna〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 勇敢なら yuukannara | — | “if it is ~”. |
| Conditional (~たら) | 勇敢だったら yuukandattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 勇敢になる yuukanninaru | 勇敢になります yuukanninarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 勇敢すぎる yuukansugiru | 勇敢すぎます yuukansugimasu | “too ~”. |
| Looks ~ (~そう) | 勇敢そう yuukansou | 勇敢そうです yuukansoudesu | “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.