facetious /fəˈsiːʃəs/ adjective Learner's definition of FACETIOUS
[more facetious; most facetious]
—
used to describe speech that is meant to be funny but that is usually regarded as annoying, silly, or not proper(尤指不分场合)好开玩笑的;滑稽的
— facetiousness
noun [noncount]