慎重 (shinchou) conjugation
careful, prudent, cautious
慎重 (しんちょう, shinchou) 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 | 慎重だ shinchouda | 慎重です shinchoudesu | The form you look up. Also the casual “is ~”. |
| Negative | 慎重じゃない shinchoujanai | 慎重じゃないです shinchoujanaidesu | “is not ~”. |
| Past | 慎重だった shinchoudatta | 慎重でした shinchoudeshita | “was ~”. |
| Past negative | 慎重じゃなかった shinchoujanakatta | 慎重じゃなかったです shinchoujanakattadesu | “was not ~”. |
| Te-form | 慎重で shinchoude | — | Links to the next clause: “~ and …”. |
| Adverb | 慎重に shinchouni | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 慎重な〜 shinchouna〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 慎重なら shinchounara | — | “if it is ~”. |
| Conditional (~たら) | 慎重だったら shinchoudattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 慎重になる shinchouninaru | 慎重になります shinchouninarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 慎重すぎる shinchousugiru | 慎重すぎます shinchousugimasu | “too ~”. |
| Looks ~ (~そう) | 慎重そう shinchousou | 慎重そうです shinchousoudesu | “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.