Illusion1. (n.) An unreal image; a deceptive appearance; a false show; mockery; hallucination.
2. (n.) Hence: Anything agreeably fascinating and charming; enchantment; witchery; glamour.
3. (n.) A sensation originated by some external object, but so modified as in any way to lead to an erroneous perception; as when the rolling of a wagon is mistaken for thunder.
4. (n.) A plain, delicate lace, usually of silk, used for veils, scarves, dresses, etc.
Thesaurus Entries
aberrancy, aberration, air, airy nothing, apparition, appearance, bamboozlement, bedevilment, befooling, bewitchery, bewitchment, bluffing, brainchild, bubble, calculated deception, captivation, chimera, circumvention, conning, deceiving, deception, deceptiveness, defectiveness, defrauding, delirium, delusion, delusiveness, deviancy, distortion, dream, dupery, eidolon, enchantment, enmeshment, ensnarement, entanglement, entrancement, entrapment, errancy, erroneousness, error, ether, fallaciousness, fallacy, falseness, falsity, fancy, fantasque, fantasy, fascination, fault, faultiness, fiction, figment, flaw, flawedness, flimflam, flimflammery, fond illusion, fooling, hallucination, hamartia, heresy, heterodoxy, hoodwinking, idle fancy, ignis fatuus, imagery, imagination, imagining, insubstantial image, invention, kidding, maggot, make-believe, maya, mirage, misapplication, misapprehension, misconception, misconstruction, misdoing, misfeasance, misinterpretation, misjudgment, mist, mistake, myth, obsession, outwitting, overreaching, peccancy, perversion, phantasm, phantasmagoria, phantom, pipe, pipe dream, possession, putting on, rainbow, romance, seeming, self-contradiction, self-deception, semblance, shadow, sick fancy, sin, sinfulness, smoke, snow job, song and dance, spirit, spoofery, spoofing, subterfuge, swindling, thick-coming fancies, thin air, trickiness, tricking, trip, unorthodoxy, untrueness, untruth, untruthfulness, vapor, victimization, vision, whim, whimsy, wildest dreams, willful misconception, wishful thinking, witchery, wrong, wrongness