Stupid

Words that describe a person who does not think well.

• What words describe a person who does not think well?
  asinine blind brainless crass crazy daft delirious demented dense dim dizzy doltish dull dull-witted dumb fanatical fatuous foolish harebrained idiotic inane ingenuous insane insensitive irrational lumpish moronic naive nonsensical obtuse retarded senile senseless silly simple slow slow-witted stupid thick thickheaded undiscerning unimaginative unperceptive unsound witless lacking in intelligence mentally lazy
• What words describe someone who makes bad decisions?
  foolish shortsighted unwise
• What words refer to not being able to think well?
  derangement idiocy imbecility insanity lunacy madness senility stupidity
• What words refer to something someone says or does that is stupid?
  absurdity nonsense
• What words refer to a person who does not think well?
  airhead blockhead dolt donkey dullard dumbbell dummy dunce dupe fanatic fool idiot imbecile moron numskull scatterbrain sucker