Delusion

• POS: Noun
• HYPHEN: de=lu=sion

OXFORD DICTIONARY

Delusion, n.
1 a false belief or impression.
2 Psychol. this as a symptom or form of mental disorder.

Idiom

delusions of grandeur a false idea of oneself as being important, noble, famous, etc.

Derivative

delusional adj.

Etymology

ME f. LL delusio (as DELUDE)

DEVIL DICTIONARY

Delusion

n. The father of a most respectable family, comprising Enthusiasm, Affection, Self-denial, Faith, Hope, Charity and many other goodly sons and daughters.

All hail, Delusion! Were it not for thee
The world turned topsy-turvy we should see;
For Vice, respectable with cleanly fancies,
Would fly abandoned Virtue's gross advances.
Mumfrey Mappel

THESAURUS

Delusion

aberrancy, aberration, acting, affectation, agnosia, airy nothing, apparition, appearance, artifice, attitudinizing, autism, bamboozlement, befooling, block, blocking, bluff, bluffing, bubble, calculated deception, casuistry, cheat, cheating, chicane, chicanery, chimera, circumvention, color, coloring, conning, counterfeit, daydream, deceit, deceiving, deception, deceptiveness, defectiveness, defrauding, delirium, deluded belief, delusion of persecution, delusiveness, dereism, deviancy, disguise, disorientation, dissemblance, dissembling, dissimulation, distortion, dream, dream vision, dreamland, dreamworld, dupery, eidolon, enmeshment, ensnarement, entanglement, entrapment, equivocation, errancy, erroneousness, error, facade, face, fake, fakery, faking, fallaciousness, fallacy, false air, false belief, false front, false show, falseness, falsity, fancy, fantasy, fault, faultiness, feigning, feint, figment, flaw, flawedness, flight of ideas, flimflam, flimflammery, fond illusion, fooling, four-flushing, fraud, front, ghost, gilt, gloss, hallucination, hallucinosis, hamartia, heresy, heterodoxy, hoodwinking, humbug, humbuggery, ignis fatuus, illusion, imposture, kidding, masquerade, mental block, mental confusion, meretriciousness, mirage, misapplication, misbelief, misconception, misconstruction, misdoing, misfeasance, misinterpretation, misjudgment, mistake, nihilism, nihilistic delusion, ostentation, outward show, outwitting, overreaching, paralogia, peccancy, perversion, phantasm, phantom, pipe dream, playacting, pose, posing, posture, pretense, pretension, pretext, psychological block, putting on, representation, ruse, seeming, self-contradiction, self-deceit, self-deception, self-delusion, semblance, shade, sham, show, simulacrum, simulation, sin, sinfulness, snow job, song and dance, sophism, sophistry, speciousness, spoofery, spoofing, spuriousness, stratagem, subterfuge, swindling, trick, trickery, trickiness, tricking, trip, unorthodoxy, untrueness, untruth, untruthfulness, vapor, varnish, victimization, vision, willful misconception, window dressing, wishful thinking, wrong, wrong impression, wrongness

ROGET THESAURUS

Delusion

Error

N error, fallacy, misconception, misapprehension, misstanding, misunderstanding, inexactness, laxity, misconstruction, miscomputation, non sequitur, mis-statement, mis-report, mumpsimus, mistake, miss, fault, blunder, quiproquo, cross purposes, oversight, misprint, erratum, corrigendum, slip, blot, flaw, loose thread, trip, stumble, botchery, slip of the tongue, slip of the lip, Freudian slip, slip of the pen, lapsus linguae, clerical error, bull, haplography, illusion, delusion, snare, false impression, false idea, bubble, self-decit, self-deception, mists of error, heresy, hallucination, false light, dream, fable, bias, misleading, erroneous, untrue, false, devoid of truth, fallacious, apocryphal, unreal, ungrounded, groundless, unsubstantial, heretical, unsound, illogical, inexact, unexact inaccurate, incorrect, indefinite, illusive, illusory, delusive, mock, ideal, spurious, deceitful, perverted, controvertible, unsustainable, unauthenticated, untrustworthy, exploded, refuted, discarded, in error, under an error, mistaken, tripping, out, out in one's reckoning, aberrant, beside the mark, wide of the mark, wide of the truth, way off, far off, astray, on a false scent, on the wrong scent, in the wrong box, outside the ballpark, at cross purposes, all in the wrong, all out, more or less, errare est humanum, mentis gratissimus error, on the dubious waves of error tost, to err is human, to forgive divine, you lie -- under a mistake.

Insanity

N insanity, disordered reason, disordered intellect, diseased mind, unsound mind, abnormal mind, derangement, unsoundness, psychosis, neurosis, cognitive disorder, affective disorder, insanity, lunacy, madness, mania, rabies, furor, mental alienation, aberration, paranoia, schizophrenia, dementation, dementia, demency, phrenitis, phrensy, frenzy, raving, incoherence, wandering, delirium, calenture of the brain, delusion, hallucination, lycanthropy, brain storm, vertigo, dizziness, swimming, sunstroke, coup de soleil, siriasis, fanaticism, infatuation, craze, oddity, eccentricity, twist, monomania (caprice), kleptodipsomania, hypochondriasis, melancholia, depression, clinical depression, severe depression, hysteria, amentia, screw loose, tile loose, slate loose, bee in one's bonnet, rats in the upper story, dotage, insane, mad, lunatic, loony, crazy, crazed, aliene, non compos mentis, not right, cracked, touched, bereft of reason, all possessed, unhinged, unsettled in one's mind, insensate, reasonless, beside oneself, demented, daft, phrenzied, frenzied, frenetic, possessed, possessed with a devil, deranged, maddened, moonstruck, shatterpated, mad-brained, scatter brained, shatter brained, crackbrained, touched, tetched, off one's head, maniacal, delirious, lightheaded, incoherent, rambling, doting, wandering, frantic, raving, stark staring mad, stark raving mad, wild-eyed, berserk, delusional, hallucinatory, corybantic, dithyrambic, rabid, giddy, vertiginous, wild, haggard, mazed, flighty, distracted, distraught, depressed, agitated, hyped up, bewildered, mad as a March hare, mad as a hatter, of unsound mind, touched in one's head, wrong in one's head, not right in one's head, not in one's right mind, not right in one's wits, upper story, out of one's mind, out of one's wits, out of one's skull, far gone, out of one's senses, out of one's wits, not in one's right mind, fanatical, infatuated, odd, eccentric, hypped, hyppish, spaced out, imbecile, silly, like one possessed, the mind having lost its balance, the reason under a cloud, tet exaltee, tet montee, ira furor brevis est, omnes stultos insanire.

Deception

N deception, falseness, untruth, imposition, imposture, fraud, deceit, guile, fraudulence, fraudulency, covin, knavery, misrepresentation, bluff, straw-bail, straw bid, spoof, delusion, gullery, juggling, jugglery, slight of hand, legerdemain, prestigiation, prestidigitation, magic, conjuring, conjuration, hocus-pocus, escamoterie, jockeyship, trickery, coggery, chicanery, supercherie, cozenage, circumvention, ingannation, collusion, treachery, practical joke, trick, cheat, wile, blind, feint, plant, bubble, fetch, catch, chicane, juggle, reach, hocus, bite, card sharping, stacked deck, loaded dice, quick shuffle, double dealing, dealing seconds, dealing from the bottom of the deck, artful dodge, swindle, tricks upon travelers, stratagem, confidence trick, fake, hoax, theft, ballot-box stuffing, barney, brace game, bunko game, drop game, gum game, panel game, shell game, thimblerig, skin game, snare, trap, pitfall, decoy, gin, springe, springle, noose, hoot, bait, decoy-duck, tub to the whale, baited trap, guet-a-pens, cobweb, net, meshes, toils, mouse trap, birdlime, dionaea, Venus's flytrap, ambush, trapdoor, sliding panel, false bottom, spring-net, spring net, spring gun, mask, masked battery, mine, flytrap, green goods, panel house, Cornish hug, wolf in sheep's clothing, disguise, disguisement, false colors, masquerade, mummery, borrowed plumes, pattes de velours, mockery, copy, counterfeit, sham, make- believe, forgery, fraud, lie, a delusion a mockery and a snare, hollow mockery, whited sepulcher, painted sepulcher, tinsel, paste, junk jewelry, costume jewelry, false jewelry, synthetic jewels, scagliola, ormolu, German silver, albata, paktong, white metal, Britannia metal, paint, veneer, jerry building, man of straw, illusion, ignis fatuus, mirage, deceived, deceiving, cunning, prestigious, prestigiatory, deceptive, deceptious, deceitful, covinous, delusive, delusory, illusive, illusory, elusive, insidious, ad captandum vulgus, untrue, mock, sham, make-believe, counterfeit, snide, pseudo, spurious, supposititious, so-called, pretended, feigned, trumped up, bogus, scamped, fraudulent, tricky, factitious bastard, surreptitious, illegitimate, contraband, adulterated, sophisticated, unsound, rotten at the core, colorable, disguised, meretricious, tinsel, pinchbeck, plated, catchpenny, Brummagem, artificial, synthetic, ersatz, simulated, under false colors, under the garb of, under cover of, over the left, keep the word of promise to the ear and break it t, fronti nulla fides, ah that deceit should steal such gentle shapes, a quicksand of deceit, decipimur specie recti, falsi crimen, fraus est celare fraudem, lupus in fabula, so smooth, he daubed his vice with show of virtue.