巨大 (kyodai) conjugation
huge, gigantic, enormous
巨大 (きょだい, kyodai) 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 | 巨大だ kyodaida | 巨大です kyodaidesu | The form you look up. Also the casual “is ~”. |
| Negative | 巨大じゃない kyodaijanai | 巨大じゃないです kyodaijanaidesu | “is not ~”. |
| Past | 巨大だった kyodaidatta | 巨大でした kyodaideshita | “was ~”. |
| Past negative | 巨大じゃなかった kyodaijanakatta | 巨大じゃなかったです kyodaijanakattadesu | “was not ~”. |
| Te-form | 巨大で kyodaide | — | Links to the next clause: “~ and …”. |
| Adverb | 巨大に kyodaini | — | Turns it into “~ly”, describing a verb. |
| Before a noun | 巨大な〜 kyodaina〜 | — | How it attaches when it modifies a noun. |
| Conditional (~ば/なら) | 巨大なら kyodainara | — | “if it is ~”. |
| Conditional (~たら) | 巨大だったら kyodaidattara | — | “if / when it is ~”. The everyday conditional. |
| Become (~なる) | 巨大になる kyodaininaru | 巨大になります kyodaininarimasu | “becomes ~” — the change-of-state form. |
| Too much (~すぎる) | 巨大すぎる kyodaisugiru | 巨大すぎます kyodaisugimasu | “too ~”. |
| Looks ~ (~そう) | 巨大そう kyodaisou | 巨大そうです kyodaisoudesu | “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.