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English definition of “facetious”

facetious

adjective     /fəˈsiː.ʃəs/ disapproving
not serious about a serious subject , in an attempt to be funny or to appear clever : facetious remarks He's just being facetious.Humour and humorous facetiously     /-li/ adverb facetiousness     /-nəs/ noun [U]
(Definition of facetious adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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