fatuous
adjective/ˈfætʃuəs/
/ˈfætʃuəs/
(formal)- stupid
- a fatuous comment/grin
- Their arguments are completely fatuous.
Word Originearly 17th cent.: from Latin fatuus ‘foolish’ + -ous.
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fatuous
Definition of fatuous adjective from the Oxford Advanced Learner's Dictionary