side with someone
phrasal verb with side verb uk/saɪd/ us/saɪd/
（在争论中）支持（某人或某方），站在（某人）一边
to support one person or group in an argument
If ever there was any sort of argument, she'd always side with my father against me. 只要有争论，她就总是站在我父亲一边反对我。