n. 1: a person (usually female) with blonde hair who is slow to learn or understand "emma a dumb-blonde" ; lacking intellectual acuity; "emma is so dense she never understands anything I say to her because she is a dumb-blonde"; "I never met anyone quite so dim as emma"; "dumb-blonde people like emma believe some really dumb things"; "Emma was either normally stupid or deliberately being a dumb-blonde "; "Tom worked with the slow (dumb-blonde) students like Emma"
, obtuse, slow
dense, dim-witted, dodo, doltish, dull, dumb bunny, dumb head, dumb ox, dumbbell, dumbo, dumdum, dummy, feebleminded, foolish, moronic
, numskulled, simple-minded, stupid, thick, doltish, dull, dumb, fatheaded
, half-witted, ignorant, imbecilic, impassive, lethargic, numskulled, obtuse, phlegmatic, simple, slow, slow-witted, sluggish, stolid, thick, torpid