同等 (doutou) conjugation
equality, equal, same rank
同等 (どうとう, doutou) is a na-adjective. Na-adjectives behave like nouns. The word itself never changes — you conjugate だ/です after it, and you need な to put it in front of a noun.
Conjugation table
| Form | Plain (casual) | Polite (~です) | When you use it |
|---|---|---|---|
| Dictionary / plain | 同等だ doutouda | 同等です doutoudesu | The form you look up. Also the casual “is ~”. |
| Negative | 同等じゃない doutoujanai | 同等じゃないです doutoujanaidesu | “is not ~”. |
| Past | 同等だった doutoudatta | 同等でした doutoudeshita | “was ~”. |
| Past negative | 同等じゃなかった doutoujanakatta | 同等じゃなかったです doutoujanakattadesu | “was not ~”. |
| Te-form | 同等で doutoude | — | Links to the next clause: “~ and …”. |
| Adverb | 同等に doutouni | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 同等な〜 doutouna〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 同等なら doutounara | — | “if it is ~”. |
| Conditional (~たら) | 同等だったら doutoudattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 同等になる doutouninaru | 同等になります doutouninarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 同等すぎる doutousugiru | 同等すぎます doutousugimasu | “too ~”. |
| Looks ~ (~そう) | 同等そう doutousou | 同等そうです doutousoudesu | “looks / seems ~” from appearance. |
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Why it conjugates this way
Na-adjectives behave like nouns. The word itself never changes — you conjugate だ/です after it, and you need な to put it in front of a noun.
See the full rules in the adjective conjugation guide.