insubstantial Synonyms

unsubstantial flimsy unreal slight small sparse spectral superficial tenuous thin thinner thinnish translucent trifling trivial tumble-down skin-deep shallow scanty 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 wispy