not intelligent► not very bright/intelligent/clever/smart also not too bright/intelligent/clever/smart someone who is not very bright/intelligent/clever/smart is unable to learn and understand things quickly and easily: · Sometimes I think Sheila just isn't very bright.· Saja may be handsome, but he's not too smart.· Franco works hard but he isn't really very intelligent.· He treated me like a young and not very clever child.
► stupid not at all intelligent: · She talks to us as if we're completely stupid.· Poor Larry's too stupid to realize when you're making fun of him.· It's only stupid people who believe in all that astrology mumbo-jumbo.
► dumb especially American, spoken not at all intelligent: · The athletic guys were seen as 'cute but dumb'.· You're so dumb, Clarissa!· If we look dumb enough, someone's bound to come and help us out.
► thick British informal not at all intelligent: · He's a nice boy, but he's a bit thick, isn't he?· Not wishing to appear thick, but what exactly are you doing?as thick as two short planks (=very stupid): · Some of the students they let in these days are as thick as two short planks.
► dim informal unintelligent and very slow to learn: · She's not the brightest kid in the class -- in fact, she's quite dim.· I'm playing a guy who's well-meaning but kind of dim.
► brainless informal completely stupid: · My sister's latest boyfriend is pretty brainless; it's impossible to have a conversation with him.· 'You brainless scum!' he shouted after the departing boys.
► gormless British informal very stupid - use this especially to describe someone who looks stupid or who never has their own ideas: · He just sat there with his mouth open looking really gormless.· a grinning, gormless boy
► unintelligent formal not as intelligent as most people: · It would be a mistake to assume that all football players are unintelligent.· He may not be as bright as his sister, but he's far from unintelligent.