いい
いい
adjective (i-adjective)
good, fine, nice
1.
good, fine, nice
A general positive evaluation. Can describe quality, condition, character, or suitability. One of the most frequently used adjectives in Japanese.
2.
okay, all right (permission/acceptance)
Used to give permission or indicate that something is acceptable. いいですよ (That's fine / Go ahead).
3.
no thank you, I'm fine
Used to politely decline an offer. When someone offers you something, いいです can mean 'No, thank you' or 'I'm fine (without it).'
もういいです。
I'm fine now. / That's enough.
いい has irregular conjugation. The negative, past, and other forms use the stem よ- from the alternate form 良い: よくない (not good), よかった (was good), よく (well). The form いい is used only in the dictionary/plain present form. 良い is more formal/literary. In the pattern 〜てもいい (may I...?), いい grants permission.