絶交する break off relations ((with))
- 太郎は修と絶交した
- Taro broke off his friendship with Osamu.
- 彼女と絶交した
- I am through [finished] with her./I'm done with her.
- もう彼とは絶交だ
- I'll have nothing more to do with him.
- 絶交状a letter breaking off ((with));《口》 a Dear John letter