AskDefine | Define insubstantial

Dictionary Definition

insubstantial adj
1 lacking material form or substance; unreal; "as insubstantial as a dream"; "an insubstantial mirage on the horizon" [syn: unsubstantial, unreal] [ant: substantial]
2 lacking in nutritive value; "the jejune diets of the very poor" [syn: jejune]

User Contributed Dictionary



  1. Lacking substance; not real or strong.
    The bridge was insubstantial and would not safely carry a car.

Synonyms, Antonyms and Related Words

adulterated, airy, asomatous, astral, attenuate, attenuated, bodiless, boyish, brittle, capricious, changeable, chimerical, corruptible, cut, dangerous, decarnate, decarnated, deciduous, decrepit, defalcation, deficiency, deficit, delicate, desultory, diaphanous, dilute, diluted, discarnate, disembodied, dying, ephemeral, ethereal, evanescent, extramundane, fading, false, fancied, fanciful, fantastic, feeble, fickle, fine, fine-drawn, finespun, fleeting, flimsy, flitting, fly-by-night, flying, fragile, frail, fugacious, fugitive, gaseous, gauzy, ghostly, girlish, gossamer, gracile, hallucinatory, illusive, illusory, imaginary, imagined, immaterial, impalpable, impermanent, impetuous, imponderable, impulsive, inadequacy, inconclusive, inconstant, incorporate, incorporeal, infirm, insecure, insignificant, insufficiency, intangible, lack, lacy, light, metaphysical, misty, momentary, mortal, mutable, nondurable, nonmaterial, nonpermanent, nonphysical, nonsubstantial, occult, otherworldly, paltry, papery, passing, paucity, perilous, perishable, phantasmal, phantom, poor, poverty, precarious, provisional, psychic, puny, rare, rarefied, risky, scant, scantiness, scarceness, shadowy, shaky, shifting, shifty, short-lived, shortage, slender, slenderish, slight, slight-made, slim, slimmish, slinky, slippery, small, spiritual, subtile, subtle, supernatural, svelte, sylphlike, temporal, temporary, tentative, tenuous, thin, thin-bodied, thin-set, thin-spun, thinned, thinned-out, thinnish, threadlike, ticklish, transient, transitive, transitory, transmundane, treacherous, uncompact, uncompressed, unconcrete, undependable, underage, undurable, unearthly, unembodied, unenduring, unextended, unfaithworthy, unfleshly, unphysical, unproved, unreal, unreliable, unrigorous, unsolid, unsound, unstable, unsteadfast, unsteady, unsubstanced, unsubstantial, unsure, unsustained, untrustworthy, unworldly, vague, vaporous, visionary, volatile, wasp-waisted, watered, watered-down, watery, weak, weightless, willowy, windy, wiredrawn, wispy
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