dummy

1 a stupid person only a dummy would think that the mechanical monster was real Synonyms airhead, birdbrain, blockhead, bonehead, bubblehead, chowderhead, chucklehead, clodpoll (or clodpole), clot [British], cluck, clunk, cretin, cuddy (or cuddie) [British dialect], deadhead, dim bulb [slang], dimwit, dip, dodo, dolt, donkey, doofus [slang], dope, dork [slang], dullard, dumbbell, dumbhead, dum-dum, dummkopf, idiot, dunce, dunderhead, fathead, gander, golem, goof, goon, half-wit, hammerhead, hardhead, ignoramus, imbecile, jackass, know-nothing, knucklehead, lamebrain, loggerhead [chiefly dialect], loon, lump, lunkhead, meathead, mome [archaic], moron, mug [chiefly British], mutt, natural, nimrod [slang], nincompoop, ninny, ninnyhammer, nit [chiefly British], nitwit, noddy, noodle, numskull (or numbskull), oaf, pinhead, prat [British], ratbag [chiefly Australian], saphead, schlub (also shlub) [slang], schnook [slang], simpleton, stock, stupe, stupid, thickhead, turkey, woodenhead, yahoo, yo-yoRelated Words booby, buffoon, fool, goose, loony, lunatic, madman, nut, zany; loser; gawk; featherbrain, scatterbrain; beast, boor, cad, churl, clown, creep, cur, heel, jerk, skunk, snake, stinker, villain; bimbette [slang], bimbo [slang], himboNear Antonyms egghead, intellect, intellectual, sage, thinker, whiz, wizard; polymath, Renaissance man; sharpie (or sharpy)Antonyms brain, genius

2 a three-dimensional representation of the human body used especially for displaying clothes the dummies were arranged in the store window as if they were acting out scenes Synonyms mannequin, figure, form, manikin (also mannikin)Related Words doll

3 something that is made to look exactly like something else for the movie, the props department made a dummy of the pistol actually used in the assassination Synonyms carbon, carbon copy, clone, copy, dupe, duplicate, duplication, facsimile, imitation, mock, reduplication, replica, replication, reproductionRelated Words counterfeit, fake, forgery, knockoff, phony (also phoney), rip-off, rubber stamp, sham; miniature, mock-up, simulation; reconstruction, re-creation; image, likeness, semblance, shadow; impression, imprint, print; approximation, reincarnation, version; extra, reserve, spareAntonyms archetype, original, prototype