have nothing to do with / be through with / break with / be done with / breaking off / break off relations with / have nothing more to do with / break off one's friendship with / breaking with
だんぜつする
danzetsusuru
断絶する JN1;JVE
severance / breaking off / break off / cut off / sever / cutting off
だんこうする
dankousuru
断交する JN1;JVE
break of relations between two countries / severance / sever relations / break off relations / break of relations / have severed diplomatic relations / rupture of diplomatic relations