facetious
/fəˈsiːʃəs/adjective
- treating serious issues with deliberately inappropriate humour; flippant（对待严肃的问题）嬉皮笑脸的, 不严肃的。
派生词
facetiously
adverbfacetiousness
noun词源
late 16th cent. （in the general sense 'witty, amusing'）： from French facétieux, from facétie, from Latin facetia 'jest', from facetus 'witty'.