체면이 · 체면을
face, dignity, appearances
Example
체면 때문에 모른다고 말하지 못했어요.
I couldn't say I didn't know because I didn't want to lose face.
Word parts
체 body+면 face
Literally 'body and face' — how you appear to others.
Good to know
체면을 차리다 = to keep up appearances; 체면이 서다 / 구기다 = to save / lose face.