険しい (kewashii) conjugation
steep, rugged; severe
険しい (けわしい, kewashii) 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 | 険しい kewashii | 険しいです kewashiidesu | The form you look up. Also the casual “is ~”. |
| Negative | 険しくない kewashikunai | 険しくないです kewashikunaidesu | “is not ~”. |
| Past | 険しかった kewashikatta | 険しかったです kewashikattadesu | “was ~”. |
| Past negative | 険しくなかった kewashikunakatta | 険しくなかったです kewashikunakattadesu | “was not ~”. |
| Te-form | 険しくて kewashikute | — | Links to the next clause: “~ and …”. |
| Adverb | 険しく kewashiku | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 険しい〜 kewashii〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 険しければ kewashikereba | — | “if it is ~”. |
| Conditional (~たら) | 険しかったら kewashikattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 険しくなる kewashikunaru | 険しくなります kewashikunarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 険しすぎる kewashisugiru | 険しすぎます kewashisugimasu | “too ~”. |
| Looks ~ (~そう) | 険しそう kewashisou | 険しそうです kewashisoudesu | “looks / seems ~” from appearance. |
🔊 Tap any Japanese word to hear it spoken.
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.