Tra từ behind somebody's back - Từ điển Oxford Advanced Learner 8th

Từ điển Oxford Advanced Learner 8th

behind somebody's back behind sb's ˈback idiom without sb's knowledge or permission • Have you been talking about me behind my back? • They went ahead and sold it behind my back. compare ↑somebody's face ↑face _n. Main entry: ↑back_idiom