A person given to fanciful speculations and enthusiasms with little regard for what is actually possible.

Roget 515: imagination; originality; invention; fancy; inspiration; verve.    warm imagination, heated imagination, excited imagination, sanguine imagination, ardent imagination, fiery imagination, boiling imagination, wild imagination, bold imagination, daring imagination, playful imagination, lively imagination, fertile imagination, fancy.    mind's eye;" such stuff as dreams are made of" [Tempest]. ideality, idealism; romanticism, utopianism, castle-building.    dreaming; phrensy^†, frenzy; ecstasy, extasy^†; calenture etc. (delirium) 503^†; reverie, trance; day dream, golden dream; somnambulism.    conception, Vorstellung [G.], excogitation^†, a fine frenzy;" cloudland^†, dreamland; flight of fancy, fumes of fancy; thick coming fancies" [Macbeth]; creation of the brain, coinage of the brain; imagery.    conceit, maggot, figment, myth, dream, vision, shadow, chimera; phantasm, phantasy; fantasy, fancy; whim, whimsey^†, whimsy; vagary, rhapsody, romance, gest^†, geste^†, extravaganza; air drawn dagger, bugbear, nightmare.    flying Dutchman, great sea serpent, man in the moon, castle in the air, pipe dream, pie-in-the-sky, chateau en Espagne [Fr.]; Utopia, Atlantis^†, happy valley, millennium, fairyland; land of Prester John, kindgom of Micomicon; work of fiction etc. (novel) 594; Arabian nights^†; le pot au lait [Fr.]; dream of Alnashar etc. (hope) 858^†.    illusion etc. (error) 495; phantom etc. (fallacy of vision) 443; Fata Morgana etc. (ignis fatuus) [Lat.] 423; vapor etc. (cloud) 353; stretch of the imagination etc. (exaggeration) 549; mythogenesis^†.    idealist, romanticist, visionary; mopus^†; romancer, dreamer; somnambulist; rhapsodist etc. (fanatic) 504; castle-buildier, fanciful projector.    ... show more

A person with unusual powers of foresight.

synonyms: illusionist, seer.

Polish: jasnowidz, przepowiadacz, jasnowidzący, wizjoner

Not practical or realizable; speculative:
— Visionary schemes for getting rich.

synonyms: airy, impractical, Laputan, windy.

Roget 984: heterodox, heretical; unorthodox, unscriptural, uncanonical; antiscriptural^†, apocryphal; unchristian, antichristian^†; schismatic, recusant, iconoclastic; sectarian; dissenting, dissident; secular &c., (lay) 997.    pagan; heathen, heathenish; ethnic, ethnical; gentile, paynim^†; pantheistic, polytheistic.    Judaical, Mohammedan, Brahminical^†, Buddhist etc. n.; Romish, Protestant etc. n.. bigoted etc. (prejudiced) 481, (obstinate) 606; superstitious etc. (credulous) 486; fanatical; idolatrous etc. 991; visionary etc. (imaginative) 515.    ... show more

Roget 2: inexistent^†, nonexistent etc. 1; negative, blank; missing, omitted; absent etc. 187; insubstantial, shadowy, spectral, visionary.    unreal, potential, virtual; baseless, in nubibus [Lat.]; unsubstantial etc. 4; vain.    unborn, uncreated^†, unbegotten, unconceived, unproduced, unmade.    perished, annihilated, etc. v.; extinct, exhausted, gone, lost, vanished, departed, gone with the wind; defunct etc. (dead) 360.    fabulous, ideal etc. (imaginary) 515, supposititious etc. 514.    ... show more

Roget 4: unsubstantial; baseless, groundless; ungrounded; without foundation, having no foundation.    visionary etc. (imaginary) 515; immaterial etc. 137; spectral etc. 980; dreamy; shadowy; ethereal, airy; cloud built, cloud formed; gossamery, illusory, insubstantial, unreal.    vacant, vacuous; empty etc. 187; eviscerated; blank, hollow; nominal; null; inane.    ... show more

Roget 471: impossible; not possible etc. 470; absurd, contrary to reason; unlikely; unreasonable etc. 477; incredible etc. 485; beyond the bounds of reason, beyond the bounds of possibility, beyond the realm of possibility; from which reason recoils; visionary; inconceivable etc. (improbable) 473; prodigious etc. (wonderful) 870; unimaginable, inimaginable^†; unthinkable.    impracticable unachievable; unfeasible, infeasible; insuperable; unsurmountable^†, insurmountable; unattainable, unobtainable; out of reach, out of the question; not to be had, not to be thought of; beyond control; desperate etc. (hopeless) 859; incompatible etc. 24; inaccessible, uncomeatable^†, impassable, impervious, innavigable^†, inextricable; self-contradictory.    out of one's power, beyond one's power, beyond one's depth, beyond one's reach, beyond one's grasp; too much for; ultra crepidam [Lat.].    ... show more

Roget 515: imagined etc. v.; ben trovato [It]; air drawn, airbuilt^†.    imagining etc. v., imaginative; original, inventive, creative, fertile.    romantic, high flown, flighty, extravagant, fanatic, enthusiastic, unrealistic, Utopian, Quixotic.    ideal, unreal; in the clouds, in nubibus [Lat.]; unsubsantial^† etc. 4; illusory etc. (fallacious) 495.    fabulous, legendary; mythical, mythic, mythological; chimerical; imaginary, visionary; notional; fancy, fanciful, fantastic, fantastical^†; whimsical; fairy, fairy-like; gestic^†.    ... show more

Polish: niepraktyczny