To provoke resentment or antipathy; to do or say something that makes people dislike or oppose you.
上司の無神経な冗談が同僚の反感を買ってしまった。
The boss's insensitive joke ended up earning the colleagues' resentment.
政治家の発言はすぐに批判され、反感を買う結果になった。
The politician's remarks were immediately criticized and resulted in provoking antipathy.
店員の対応が悪くて客の反感を買い、クレームにつながった。
Poor service from the clerk earned the customer's resentment and led to a complaint.