Alternative spelling of dumb blonde

(simile) Very dumb (stupid).

(simile) Synonym of thick as a brick

(slang) Remarkably stupid.

(simile, slang) Very stupid.

(Britain, derogatory) Alternative form of dumb as a bag of hammers

(informal) Very stupid or foolish. / (informal) Sly and cunning, while deliberately giving the misleading impression of being stupid or foolish.

(informal, vulgar) Of an adolescent boy: young and foolish.

(Ireland) Those who fail to speak up fail to get what they want.