Adverb
Usually written in kana
1. nicely; properly; well; skillfully; skilfully
ここからではよくわからない。It is not clear from here.
2. frequently; often
最近よく来てるんだ。I've been coming here a lot lately.
3. I'm glad that you ...; thank you for ...
4. (you have) quite the nerve to; I don't know how you can ...