burn your bridges
US /bɜrn jʊər ˈbrɪdʒɪz/
UK /bɜrn jʊər ˈbrɪdʒɪz/

1.
관계를 끊다, 돌아갈 길을 없애다
to do something that makes it impossible to return to an earlier state or relationship
:
•
By quitting his job so angrily, he really burned his bridges with that company.
그는 화를 내며 직장을 그만둠으로써 그 회사와의 관계를 완전히 끊었다.
•
Think carefully before you act; you don't want to burn your bridges.
행동하기 전에 신중하게 생각해; 관계를 끊고 싶지 않을 거야.