Adjacent Words

Unsubstantial definitions

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Webster's 1828 Dictionary

UNSUBSTAN'TIAL, a.
1. Not substantial; not solid.
2. Not real; not having substance.

WordNet (r) 3.0 (2005)

adj
1: lacking material form or substance; unreal; "as insubstantial as a dream"; "an insubstantial mirage on the horizon" [syn: insubstantial, unsubstantial, unreal] [ant: material, real, substantial]

Merriam Webster's

adjective Date: 15th century not substantial ; lacking substance, firmness, or strength <unsubstantial shadows> • unsubstantiality noun • unsubstantially adverb

Oxford Reference Dictionary

adj. having little or no solidity, reality, or factual basis. Derivatives: unsubstantiality n. unsubstantially adv.

Webster's 1913 Dictionary

Unsubstantial Un`sub*stan"tial, a. Lacking in matter or substance; visionary; chimerical.

Soule's Dictionary of English Synonyms

a. 1. Light, flimsy, gossamery, thin. 2. Unreal, imaginary, chimerical, visionary, ideal, illusory, fantastical. 3. Unsound, untenable, weak, flimsy, fallacious, erroneous, illogical.

Moby Thesaurus

Barmecidal, Barmecide, adulterated, airy, apparent, apparitional, asomatous, astral, attenuate, attenuated, autistic, bodiless, breakable, brittle, cheap-jack, chimeric, cobwebby, crumbling, crumbly, cut, dainty, dangerous, decarnate, decarnated, deceptive, decrepit, delicate, delicately weak, delusional, delusionary, delusive, delusory, dereistic, desultory, dilute, diluted, discarnate, disembodied, disintegrating, dreamlike, dreamy, effeminate, erroneous, ethereal, extramundane, fallacious, false, fanciful, fantastic, feeble, fine, flimsy, fragile, frail, frangible, gaseous, ghostly, gimcrack, gimcracky, gossamery, hazardous, illusional, illusionary, illusive, illusory, imaginary, immaterial, impalpable, imponderable, improbable, inconceivable, inconclusive, incorporate, incorporeal, incredible, infirm, insecure, insubstantial, intangible, jerry, jerry-built, light, lightweight, merely nominal, metaphysical, misleading, namby-pamby, nonmaterial, nonphysical, nonsubstantial, not real, occult, ostensible, otherworldly, papery, pasteboardy, perilous, phantasmagoric, phantasmal, phantom, poor, poorish, precarious, provisional, psychic, puny, rare, rarefied, risky, rotten, rotten at, seeming, self-deceptive, self-deluding, shadowy, shaky, shattery, shifting, shifty, sissified, sleazy, slight, slippery, specious, spectral, spiritual, subtile, subtle, supernatural, supposititious, tacky, temporary, tentative, tenuous, thick, thin, thinned, thinned-out, ticklish, transmundane, treacherous, unactual, unbelievable, uncompact, uncompressed, unconcrete, unconvincing, undependable, unearthly, unembodied, unextended, unfaithworthy, unfirm, unfleshly, unfounded, unphysical, unproved, unreal, unrealistic, unreliable, unrigorous, unsolid, unsound, unstable, unsteadfast, unsteady, unsturdy, unsubstanced, unsure, unsustained, untrustworthy, unworldly, vaporous, visionary, watered, watered-down, weak, weakly, weightless, windy, wispy, womanish