insubstantial Synonyms

unsubstantial flimsy unreal small sparse slight spectral skin-deep superficial tenuous thin thinner thinnish translucent trifling trivial tumble-down shallow scanty meagre metaphysical negligible nonexistent nugatory paltry papery petty phantasmal picayunish pointless poor puny purportless ramshackle rickety unbacked uncomprehensive unbodied lightweight footling chiffon meaningless untouchable nonmaterial nonphysical pint-size unconvincing unextended unnourished wafer-thin