樂此不疲

Happy; cheerful; to laugh; enjoyment; pleasure; music; a surname; used in place names.

This; these; here; now; then; in this case; thus; so.

Function word; no; not; un-; negative prefix; used to form questions or emphasize a statement; sometimes used for rhythm.

To be weary or exhausted; feeling tired; to make tired; to be fed up; weak or aged; low prices and slow sales.