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Good, favorable, or of high quality
このレストランの料理はとても良いです。
The food at this restaurant is very good.
Used to describe positive qualities of objects, people, or situations.
Appropriate or suitable
この服は天気に良いです。
This clothing is suitable for the weather.
Often used to describe how well something fits a particular context.
Well-behaved or obedient
子供は良い子にしています。
The child is being well-behaved.
Used to describe behavior, especially of children or pets.
In casual speech, '良い' is often shortened to 'いい' (ii).
'良い' is an i-adjective, so it conjugates like other i-adjectives (e.g., '良くない' for 'not good').
As an i-adjective, '良い' conjugates by replacing the final 'い' with other endings (e.g., '良くない' for 'not good').
Derived from the classical Japanese word 'よい' (yoi), which has the same meaning. The kanji '良' (ri) is of Chinese origin and means 'good' or 'virtuous'.
The word '良い' is extremely common and versatile. It can be used in both formal and informal contexts. The informal form 'いい' is often used in casual speech.