expression, godan verb (-u)
antagonize; provoke antipathy; incur resentment
Used when someone's words or actions cause others to feel dislike or resentment toward them. Often implies that the negative reaction is a natural consequence of the behavior.
彼の失礼な態度は周囲の反感を買った。
His rude attitude antagonized those around him.
そんなことを言うと、反感を買うだけだよ。
Saying that sort of thing will only provoke antipathy.