Synonyms of fatuous in English:

fatuous


See US English definition of fatuous

See UK English definition of fatuous

See Spanish definition of necio

adjective

1‘she was irritated by a fatuous question’

SYNONYMS
silly, foolish, stupid, inane, nonsensical, childish, puerile, infantile, idiotic, brainless, mindless, vacuous, imbecilic, asinine, witless, empty-headed, hare-brained
pointless, senseless
ridiculous, ludicrous, absurd, preposterous, laughable, risible
informal moronic, cretinous, dumb
British informal daft, gormless
ANTONYMS

intelligent, sensible