adj. (stupider, stupidest) adj. & n.
adj. 1 unintelligent, slow-witted, foolish (a stupid fellow). 2 typical of stupid persons (put it in a stupid place). 3 uninteresting or boring. 4 in a state of stupor or lethargy. 5 obtuse; lacking in sensibility.
n. colloq. a stupid person. stupidity n. (pl. -ies). stupidly adv.
[ F stupide or L stupidus (as STUPENDOUS) ]