Korean Slang
열일
yeoril
What it means
Working hard, crushing it.
Where it comes from
Short for 열심히 일하다.
When you'd use it
Praising someone busy — or a face that looks great (얼굴이 열일한다).
Example
오늘도 열일하는 우리 팀장님!Our team lead, working hard as always!
Careful
Casual — fine with friends, out of place in formal writing or with your boss.
Frequently asked questions
What does 열일 (yeoril) mean?
열일 (yeoril) is Korean slang meaning working hard, crushing it.
Where does the Korean slang 열일 come from?
Short for 열심히 일하다.
When do Koreans say 열일?
Typical use: praising someone busy — or a face that looks great (얼굴이 열일한다).
How do you use 열일 in a sentence?
“오늘도 열일하는 우리 팀장님!” means “Our team lead, working hard as always!”
Is it OK to say 열일 to anyone?
열일 is casual — fine with friends, out of place in formal writing or with your boss.