break
It's better for both of us if we make a clean break.
He was determined make a clean break from the populism of his predecessor.
He decided to put his failed marriage behind him and make a clean break with the past.他决定忘掉自己失败的婚姻，与过去彻底绝断。

SMART Vocabulary: related words and phrases

Relationships: ending & divorce
affiliation order
annul
annulment
break something up
break up with someone
bust
child support
chuck
dump
get the pushidiom
ghosting
give someone the elbowidiom
give someone the heave-hoidiom
give someone the pushidiom
post-divorce
rebound
run out on someone/something
separate
separation
throw