turn (someone) against someone/something
phrasal verb with turn verb uk/tɜːn/ us/tɝːn/
（使某人）不喜欢;（使某人）不赞成;（使某人）与…为敌
to start not to like or agree with someone or something, or to make someone do this
After six years of fighting public opinion has turned against the war. 经过6年的战争之后，公众舆论开始转向反战。
The girl's natural father claimed that her stepfather was turning her against him. 女孩的生父声称她的继父在唆使她与自己作对。