열일
yeoril
Working hard, crushing it.
OriginShort for 열심히 일하다.
When to usePraising someone busy — or a face that looks great (얼굴이 열일한다).
CarefulCasual — fine with friends, out of place in formal writing or with your boss.
Examples
오늘도 열일하는 우리 팀장님!
Our team lead, working hard as always!