Synonyms and Antonyms of brainless
- a teacher who affirms that there are no brainless students, only lazy ones
airheaded, birdbrained, bonehead, boneheaded, brain-dead, bubbleheaded, chuckleheaded, dense, dim, dim-witted, doltish, dopey (also dopy), dorky [slang], dull, dumb, dunderheaded, empty-headed, fatuous, gormless [chiefly British], half-witted, knuckleheaded, lamebrain (or lamebrained), lunkheaded, mindless, oafish, obtuse, opaque, pinheaded, senseless, simple, slow, slow-witted, soft, softheaded, stupid, thick, thick-witted, thickheaded, unintelligent, unsmart, vacuous, weak-minded, witless
cretinous, feebleminded, simpleminded
boobish, foolish, idiotic (also idiotical), imbecile (or imbecilic), moronic
ignorant, illiterate, lowbrow, uneducated, uninformed, unintellectual, untaught, unthinking
absurd, asinine, balmy, cockeyed, crackpot, crazy, cuckoo, daffy, daft, dippy, dotty, featherheaded, fool, half-baked, harebrained, insane, kooky (also kookie), loony (also looney), lunatic, mad, nonsensical, nutty, preposterous, sappy, screwball, silly, tomfool, unwise, wacky (also whacky), zany
acute, astute, discerning, insightful, keen, knowing, perceptive, percipient, perspicacious, sagacious, sage, sapient, savvy, wise
cerebral, erudite, highbrow, intellectual, knowledgeable, learned, literate, scholarly, thinking, well-read
educated, informed, schooled, skilled, trained
crafty, cunning, foxy, shrewd, wily
- a brainless decision to talk on her cell phone while weaving in and out of traffic