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良い
ii
good
これは良いアイデアです。
This is a good idea.
general
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.
general
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.
general
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.
Related Phrases
Pro Tip
Informal Usage
In casual speech, '良い' is often shortened to 'いい' (ii).
Adjective Form
'良い' is an i-adjective, so it conjugates like other i-adjectives (e.g., '良くない' for 'not good').
Gold Rule
Conjugation
As an i-adjective, '良い' conjugates by replacing the final 'い' with other endings (e.g., '良くない' for 'not good').
Word Origin
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'.
Usage Notes
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.
Word Breakdown
良
good, virtuous
rootい
adjective ending
suffix和英辞典