fa·ce·tious 
/fəˈsi:ʃəs/ adjective
/fəˈsi:ʃəs/ adjective [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 ▪ I was just being facetious. ▪ a facetious remark
— fa·ce·tious·ly adverb
▪ She was speaking facetiously.
▪ She was speaking facetiously.
— fa·ce·tious·ness noun [noncount]
