Definition of fatuous adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈfætʃuəs//
; NAmE NAmE//ˈfætʃuəs//
(formal) Stupid
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stupid a fatuous comment/grin Their arguments are completely fatuous. See related entries: Stupid Word Origin early 17th cent.: from Latin fatuus ‘foolish’ + -ous.
See the Oxford Advanced American Dictionary entry: fatuous