material, real, substantial

insignificant, inconsequential, unsubstantial, flimsy, vacuous, trivial, implausible, nugatory, superfluous, unimportant, risible, evanescent, banal, trifling, fleeting, piffling, ephemeral, stagey, tangential, trite, unaffecting, fanciful, unamusing, incidental, unmemorable, perfunctory, fatuous, vaporous, uninteresting, footling, leaden, specious, mere, substanceless, unpersuasive, unfocused, contentless, illusory, puny, gratuitous, prosaic, negligible, gossamer, superficial, unconvincing, laughable, jejune, otiose, preposterous, indistinctive, unexceptional, forgivable, extraneous, tricksy, stagy, irrelevant, skimpy, chimerical, sententious, vague, minuscule, de trop, meaningless, vapid, unspecific, pallid, formulaic, devoid, silly, unremarkable, reductive, overfamiliar, unenlightening, flaccid, juiceless, formless, weighty, meretricious, nebulous, nabokovian, innocuous, pointless, shapeless, glib, plausible, parodic, unobjectionable, miniscule, inelegant, paltry, tendentious, immaterial, absurd, hollow, hortatory, unexciting, ludicrous, prolix, ineffectual, depthless, purposeless, abstruse, unreal, airy, impermanent, ethereal, ghostlike, illusive, shadowy, visible, corporeal, impalpable, imperishable, incorporeal, phantasmal, bodiless, fragile, ghostly

airiness, buoyancy, flimsy, irreality, light, simulacrum, unreality

aerial, aeriform, aery, airy, ethereal, jejune, shadowy, unreal, unsubstantial, unwholesome, wraithlike