make it up

Từ điển Oxford Advanced Learner 8th

ˌmake ˈup (with sb) derived
(BrE also ˌmake it ˈup)to end a disagreement with sb and become friends again
•Why don't you two kiss and make up?
•Has he made it up with her yet?
•Have they made it up yet?
Main entry: ↑make_derived