kisskiss1 /kɪs/ ●●● verb 1 [intransitive, transitive] to touch someone with your lips as a greeting, or to show love: They stood on the beach and kissed. She kissed me on the cheek. He leaned forward and kissed her goodnight.2kiss something goodbye spoken used in order to say that someone will lose his/her chance to get or do something: If you don’t start working harder, you can kiss medical school goodbye. [Origin: Old English cyssan]