be out of your element
US /bi aʊt əv jʊər ˈɛl.ɪ.mənt/
UK /bi aʊt əv jʊər ˈɛl.ɪ.mənt/

1.
어색하다, 익숙하지 않다
to be in a situation that you are not familiar with or comfortable in
:
•
She felt completely out of her element at the formal dinner party.
그녀는 공식 만찬에서 완전히 어색함을 느꼈다.
•
As a programmer, he was out of his element trying to fix the car engine.
프로그래머로서 그는 자동차 엔진을 고치려 할 때 어색함을 느꼈다.