優しい (yasashii) conjugation
kind (person), gentle (person), easy (problem)
優しい (やさしい, yasashii) is an i-adjective. I-adjectives carry their own tense: drop the final い and the endings attach straight to the stem. No だ, no です needed to make a complete sentence.
Conjugation table
| Form | Plain (casual) | Polite (~です) | When you use it |
|---|---|---|---|
| Dictionary / plain | 優しい yasashii | 優しいです yasashiidesu | The form you look up. Also the casual “is ~”. |
| Negative | 優しくない yasashikunai | 優しくないです yasashikunaidesu | “is not ~”. |
| Past | 優しかった yasashikatta | 優しかったです yasashikattadesu | “was ~”. |
| Past negative | 優しくなかった yasashikunakatta | 優しくなかったです yasashikunakattadesu | “was not ~”. |
| Te-form | 優しくて yasashikute | — | Links to the next clause: “~ and …”. |
| Adverb | 優しく yasashiku | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 優しい〜 yasashii〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 優しければ yasashikereba | — | “if it is ~”. |
| Conditional (~たら) | 優しかったら yasashikattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 優しくなる yasashikunaru | 優しくなります yasashikunarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 優しすぎる yasashisugiru | 優しすぎます yasashisugimasu | “too ~”. |
| Looks ~ (~そう) | 優しそう yasashisou | 優しそうです yasashisoudesu | “looks / seems ~” from appearance. |
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Why it conjugates this way
I-adjectives carry their own tense: drop the final い and the endings attach straight to the stem. No だ, no です needed to make a complete sentence.
See the full rules in the adjective conjugation guide.