simpleton(n = noun.person) simple - a person lacking intelligence or common sense;
is a kind of individual, mortal, person, somebody, someone, soul
has particulars: airhead, dimwit, doofus, half-wit, nitwit, dingbat, boob, booby, dope, dumbbell, dummy, pinhead, fool, muggins, sap, saphead, tomfool, changeling, cretin, half-wit, idiot, imbecile, moron, retard, idiot savant, nebbech, nebbish, nincompoop, ninny, poop, forgetful person, scatterbrain, schlemiel, shlemiel, schlep, schlepper, shlep, shlepper, schnook, shnook, sheep, space cadet, lame, square, dolt, dullard, pillock, poor fish, pudden-head, pudding head, stupe, stupid, stupid person, subnormal, twerp, twirp, twit
A person of weak intellect; a silly person. [1913 Webster]
simpleton, n. a foolish, gullible, or halfwitted person.
Etymology:
SIMPLE after surnames f. place-names in -ton
N fool, idiot, tomfool, wiseacre, simpleton, witling, dizzard, donkey, ass, ninny, ninnyhammer, chowderhead, chucklehead, dolt, booby, Tom Noddy, looby, hoddy-doddy, noddy, nonny, noodle, nizy, owl, goose, goosecap, imbecile, gaby, radoteur, nincompoop, badaud, zany, trifler, babbler, pretty fellow, natural, niais, child, baby, infant, innocent, milksop, sop, oaf, lout, loon, lown, dullard, doodle, calf, colt, buzzard, block, put, stick, stock, numps, tony, bull head, dunderhead, addlehead, blockhead, dullhead, loggerhead, jolthead, jolterhead, beetlehead, beetlebrain, grosshead, muttonhead, noodlehead, giddyhead, numbskull, thickskull, lackbrain, shallowbrain, dimwit, halfwit, lackwit, dunderpate, lunkhead sawney, gowk, clod, clod-hopper, clod-poll, clot-poll, clot-pate, bull calf, gawk, Gothamite, lummox, rube, men of Boeotia, wise men of Gotham, un sot a triple etage, sot, jobbernowl, changeling, mooncalf, gobemouche, dotard, driveler, old fogey, old woman, crock, crone, grandmother, cotquean, henhussy, incompetent (insanity), greenhorn, dunce, lubber, madman, one who will not set the Thames on fire, one who did not invent gunpowder, qui n'a pas invente' la poudre, no conjuror, fortuna favet fatuis, les fous font les festinas et les sages les mangen, nomina stultorum parietibus harrent, stultorum plena sunt omnia.