IPA: //ˈfæ.tʃu.əs//
KK: /ˈfædʒuəs/
Showing a lack of intelligence or thought; silly or foolish in a way that is not serious.
His fatuous remarks during the meeting made everyone roll their eyes.
Fatuous → It is derived from the Latin word "fatuus" (meaning foolish or silly). The word "fatuous" describes someone who is foolishly self-satisfied or lacking in intelligence.
Think of the Latin word for foolish, 'fatuus', to remember that 'fatuous' means foolish or silly.