Synonyms for Imbecile:

adj.

all (adjective)
imbecilic.
stupid, foolish (adjective)
backward, imbecilic, simple.

n.

backward, cabbage, cripple, dwarf, humpback, hunchback, lunatic, madman, madwoman. ability, cow, deadhead, ding-dong, dip, dork, gander, goof, goose, jerk, nerd, ninny, schmuck, simple, spastic, tomfool, turkey, wanker, Mooncalf, schmo, softhead. fool (noun)
blockhead, bonehead, bungler, clod, cretin, dimwit, dolt, dullard, dumbbell, dummy, dunce, fool, half-wit, ignoramus, loon, moron, nincompoop, nitwit, simpleton, crackpot, chuckle-head, knuckle-head, lame-brain, meathead.
ignoramus (noun)
birdbrain, buffoon, scatterbrain.
imbecile (noun)
changeling, cretin, half-wit, imbecilic, moron, unintelligent.
schmuck (noun)
schmuck.
stupid person (noun)
clod, dunce.
very stupid person (noun)
birdbrain, dimwit, dolt, dummy, dunce, fool, jerk, moron, simpleton.

Other synonyms:

cabbage, ding-dong, humpback, hunchback, madman, madwoman, nerd, ninny, schmuck, spastic, tomfool, schmo, softhead. goof, goose, lunatic, turkey, Mooncalf. cripple, dwarf, gander. backward. simple. Other relevant words:
ability, backward, cabbage, changeling, cow, cripple, deadhead, ding-dong, dip, dork, dwarf, gander, goof, goose, humpback, hunchback, imbecilic, jerk, lunatic, madman, madwoman, nerd, ninny, schmuck, simple, spastic, tomfool, turkey, unintelligent, wanker, Mooncalf, schmo, softhead.

Usage examples for imbecile

  1. For the last five years he had been practically a helpless imbecile – The Crooked House by Brandon Fleming
  2. The labor union has two difficulties; the first one is that it began to make a labor scale for all classes on a par, and they scale down a man that can earn five dollars a day to two and a half a day, in order to level up to him an imbecile that cannot earn fifty cents a day. – The Art of Public Speaking by Dale Carnagey (AKA Dale Carnegie) and J. Berg Esenwein
  3. He is the psychologist who has tried to breed different strains of rats, some of superior intelligence and others of the imbecile type. – The Rat Racket by David Henry Keller