phrasal-verb
break off with
関係を終わらせるか、誰かとのコミュニケーションを止める
Meaning
to end a relationship or stop communicating with someone
Example
After the big fight, she decided to **break off with** him for good.
大きな喧嘩の後、彼女は永遠に**彼と別れることに決めました**。