面白い (omoshiroi) conjugation
interesting, amusing
面白い (おもしろい, omoshiroi) 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 | 面白い omoshiroi | 面白いです omoshiroidesu | The form you look up. Also the casual “is ~”. |
| Negative | 面白くない omoshirokunai | 面白くないです omoshirokunaidesu | “is not ~”. |
| Past | 面白かった omoshirokatta | 面白かったです omoshirokattadesu | “was ~”. |
| Past negative | 面白くなかった omoshirokunakatta | 面白くなかったです omoshirokunakattadesu | “was not ~”. |
| Te-form | 面白くて omoshirokute | — | Links to the next clause: “~ and …”. |
| Adverb | 面白く omoshiroku | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 面白い〜 omoshiroi〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 面白ければ omoshirokereba | — | “if it is ~”. |
| Conditional (~たら) | 面白かったら omoshirokattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 面白くなる omoshirokunaru | 面白くなります omoshirokunarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 面白すぎる omoshirosugiru | 面白すぎます omoshirosugimasu | “too ~”. |
| Looks ~ (~そう) | 面白そう omoshirosou | 面白そうです omoshirosoudesu | “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.