잘난 척하지 마

Don't show off.

→ 잘나다
phrase Rare #23,274
Don't show off. An informal, often blunt command telling someone not to act superior or pretend to be especially talented or knowledgeable.
KO: 잘난 척하지 마!
EN: Don't show off!

이런 능력도 없으면서 잘난 척하지 마

Don’t act so full of yourself when you don’t even have this kind of ability.

— 수차천 (2026)

잘난 척하지 마

Don't show off.

— 빅토리아 (2015)

잘난 척하지 마!

Don't show off!

— 바람이 분다 (2013)

너무 잘난 척하지 마

Don't be so conceited.

— 로마 (2018)