Definition
to begin to dislike or oppose someone or something, or to cause someone to do so
（使某人）不再喜歡；（使某人）反對；（使某人）成為敵人
His rumors ultimately turned her against him.
他的謠言最終讓她對他產生了敵意。
The plot of the movie turned me against that character.
電影的情節讓我對那個角色產生了反感。
He intentionally misled her to turn her against her old friends.
他故意誤導她，讓她與老朋友們反目成仇。