take French leave
US /teɪk frɛnʧ liːv/
UK /teɪk frɛnʧ liːv/

1.
무단이탈하다, 슬그머니 떠나다
to leave without permission or without telling anyone
:
•
He decided to take French leave from the meeting, much to his boss's annoyance.
그는 상사의 짜증에도 불구하고 회의에서 무단으로 이탈하기로 결정했다.
•
The soldier was punished for taking French leave from his post.
그 병사는 근무지를 무단이탈한 죄로 처벌받았다.