trying to appear funny and clever at a time when other people do not think it is appropriate, and when it would be better to be serious synonym flippant乱引人发笑的;不分场合耍聪明的 Word Originlate 16th cent. (in the general sense ‘witty, amusing’): from French facétieux, from facétie, from Latin facetia ‘jest’, from facetus ‘witty’.