知的 (chiteki) conjugation
intellectual
知的 (ちてき, chiteki) 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 | 知的だ chitekida | 知的です chitekidesu | The form you look up. Also the casual “is ~”. |
| Negative | 知的じゃない chitekijanai | 知的じゃないです chitekijanaidesu | “is not ~”. |
| Past | 知的だった chitekidatta | 知的でした chitekideshita | “was ~”. |
| Past negative | 知的じゃなかった chitekijanakatta | 知的じゃなかったです chitekijanakattadesu | “was not ~”. |
| Te-form | 知的で chitekide | — | Links to the next clause: “~ and …”. |
| Adverb | 知的に chitekini | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 知的な〜 chitekina〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 知的なら chitekinara | — | “if it is ~”. |
| Conditional (~たら) | 知的だったら chitekidattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 知的になる chitekininaru | 知的になります chitekininarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 知的すぎる chitekisugiru | 知的すぎます chitekisugimasu | “too ~”. |
| Looks ~ (~そう) | 知的そう chitekisou | 知的そうです chitekisoudesu | “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.