重たい (omotai) conjugation
heavy, massive, serious
重たい (おもたい, omotai) 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 | 重たい omotai | 重たいです omotaidesu | The form you look up. Also the casual “is ~”. |
| Negative | 重たくない omotakunai | 重たくないです omotakunaidesu | “is not ~”. |
| Past | 重たかった omotakatta | 重たかったです omotakattadesu | “was ~”. |
| Past negative | 重たくなかった omotakunakatta | 重たくなかったです omotakunakattadesu | “was not ~”. |
| Te-form | 重たくて omotakute | — | Links to the next clause: “~ and …”. |
| Adverb | 重たく omotaku | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 重たい〜 omotai〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 重たければ omotakereba | — | “if it is ~”. |
| Conditional (~たら) | 重たかったら omotakattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 重たくなる omotakunaru | 重たくなります omotakunarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 重たすぎる omotasugiru | 重たすぎます omotasugimasu | “too ~”. |
| Looks ~ (~そう) | 重たそう omotasou | 重たそうです omotasoudesu | “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.