Synonyms and Antonyms of vacuous
- a great vacuous space that should have been filled with an audience
- a movie that was enthusiastically derided for its vacuous dialogue
airheaded, birdbrained, bonehead, boneheaded, brain-dead, brainless, 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, 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