Chinese 绝交 juéjiāoTo break off a relationship with a friend or ally.

Ex: 他对我女朋友动手动脚了,所以我跟他绝交了 = He was making moves on my girlfriend, so I broke off our friendship. An example between friendly countries is: 在英国去留欧盟公投里,英国决定了跟欧盟**绝交** = In England's Brexit referendum, England decided to end its alliance with the EU.