おっかない (okkanai) conjugation
frightening, scary
おっかない (おっかない, okkanai) 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 | おっかない okkanai | おっかないです okkanaidesu | The form you look up. Also the casual “is ~”. |
| Negative | おっかなくない okkanakunai | おっかなくないです okkanakunaidesu | “is not ~”. |
| Past | おっかなかった okkanakatta | おっかなかったです okkanakattadesu | “was ~”. |
| Past negative | おっかなくなかった okkanakunakatta | おっかなくなかったです okkanakunakattadesu | “was not ~”. |
| Te-form | おっかなくて okkanakute | — | Links to the next clause: “~ and …”. |
| Adverb | おっかなく okkanaku | — | Turns it into “~ly”, describing a verb. |
| Before a noun | おっかない〜 okkanai〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | おっかなければ okkanakereba | — | “if it is ~”. |
| Conditional (~たら) | おっかなかったら okkanakattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | おっかなくなる okkanakunaru | おっかなくなります okkanakunarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | おっかなすぎる okkanasugiru | おっかなすぎます okkanasugimasu | “too ~”. |
| Looks ~ (~そう) | おっかなそう okkanasou | おっかなそうです okkanasoudesu | “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.