slap in the face verb 2noun 1forms 3 verb2 •To insult or offend unnecessarily. •To be or suddenly become bluntly obvious to. noun1 •(figurative) Something unexpectedly said or done which causes shock or offense; an insult, rebuke, or rebuff.That Joan's ex-boyfriend turned up to the school dance with Mary was a slap in the face for Joan, and the girls are no longer friends. formsslapped in the face · slapping in the face · slaps in the face