idiot moron imbecile dolt dunce blockhead numbskull know-nothing knucklehead dope pinhead ignoramus dummy goon numskull illiterate nitwit hammerhead dodo fathead dumbbell lowbrow philistine ass half-wit idiot donkey jackass jerk clown heel beast snake creep skunk boor stinker louse cad anti-mental lout cur cretin churl See Additionalbrain brain psy