잘하다

1. do a right thing; do right
To do in a right and honest way.

2. do well
To do something in an excellent and successful way.

3. be skillful; be expert; be good
To do something in a skilled and experienced manner.

4. do often
To do something frequently as a habit.

5. eat well
To enjoy eating food, etc.

6. (no equivalent expression)
(ironic) A word indicating that one is displeased with someone's actions.

7. if things go well
A word meaning "if luck favors one or if circumstances allow" or "if something is necessary."

8. at the highest
A word meaning "at the largest," "at best," or "at most."

9. please; satisfy
To treat someone kindly and carefully.