adverb
Adverbial form of 良い, used to describe doing something in a good, proper, or skillful manner.
See also: 良い
彼は日本語をよく話す。
He speaks Japanese well.
よくできました。
Well done.
adverb
Indicates a high frequency of occurrence; commonly used with verbs.
私はよくこの店に来ます。
I often come to this shop.
彼はよく遅刻する。
He is frequently late.
adverb
I'm glad that ...; thank you for ...
Expresses the speaker's positive feeling about a situation, often used in set phrases like よく来てくれました (thank you for coming).
よく来てくれましたね。
Thank you for coming.
よく無事で戻った。
I'm glad you returned safely.
adverb
quite the nerve to; I don't know how you can ...
Expresses astonishment or reproach at someone's audacity; often used with も or in rhetorical questions.
よくそんなことが言えるね。
How can you say such a thing?
よくもまあ、あんな嘘がつけたものだ。
I can't believe you had the nerve to tell such a lie.
Rare kanji for 'morally good'; not used in modern writing.
Rare kanji for 'well'; not used in modern writing.
Rare kanji for 'nicely'; not used in modern writing.
Adverbial form of the adjective 良い (よい), from Old Japanese yoshi. The adverbial form yoku developed regularly.