inform on

US /ɪnˈfɔːrm ɑːn/
UK /ɪnˈfɔːrm ɑːn/
"inform on" picture
1.

밀고하다, 고발하다

to give information to the police or other authority about someone's illegal or wrong activities

:
He decided to inform on his accomplices to get a lighter sentence.
그는 가벼운 형량을 받기 위해 공범들을 밀고하기로 결정했다.
Are you going to inform on your friend for cheating?
친구의 부정행위를 밀고할 거야?