精密 (seimitsu) conjugation
precise, exact, detailed, minute
精密 (せいみつ, seimitsu) 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 | 精密だ seimitsuda | 精密です seimitsudesu | The form you look up. Also the casual “is ~”. |
| Negative | 精密じゃない seimitsujanai | 精密じゃないです seimitsujanaidesu | “is not ~”. |
| Past | 精密だった seimitsudatta | 精密でした seimitsudeshita | “was ~”. |
| Past negative | 精密じゃなかった seimitsujanakatta | 精密じゃなかったです seimitsujanakattadesu | “was not ~”. |
| Te-form | 精密で seimitsude | — | Links to the next clause: “~ and …”. |
| Adverb | 精密に seimitsuni | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 精密な〜 seimitsuna〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 精密なら seimitsunara | — | “if it is ~”. |
| Conditional (~たら) | 精密だったら seimitsudattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 精密になる seimitsuninaru | 精密になります seimitsuninarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 精密すぎる seimitsusugiru | 精密すぎます seimitsusugimasu | “too ~”. |
| Looks ~ (~そう) | 精密そう seimitsusou | 精密そうです seimitsusoudesu | “looks / seems ~” from appearance. |
🔊 Tap any Japanese word to hear it spoken.
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.