Synonyms of brainless in English:

brainless


See US English definition of brainless

See UK English definition of brainless

See Spanish definition of tarado

adjective

1‘they behave as if they are totally brainless’

SYNONYMS
stupid, foolish, witless, unintelligent, ignorant, mindless, idiotic, imbecilic, imbecile, half-witted, simple-minded, silly, empty-headed, half-baked
informal dumb, brain-dead, moronic, cretinous, thick, thickheaded, dopey, dozy, birdbrained, pea-brained, pinheaded, dippy, lamebrained, dunderheaded, wooden-headed
British informal divvy, as thick as two short planks
Scottish, Northern English informal glaikit
North American informal dumb-ass, chowderheaded
South African informal dof
West Indian informal dotish
ANTONYMS

bright, intelligent, clever