Jilt/dʒɪlt/ Definition 1 of 2Pro Tip 1/3Emotional Impact Using 'jilt' implies a strong emotional hurt or betrayal. He never recovered after she jilted him. Pro Tip 2/3Suddenness Key 'Jilt' particularly stresses the suddenness of the rejection. She jilted her fiancé a day before the wedding. Pro Tip 3/3Not Casual 'Jilt' is used for serious commitments, not casual dating. She wouldn't jilt him over a simple argument.