1 incapable of being perceived by the senses especially the sense of touch; "the intangible constituent of energy"- James Jeans [syn: intangible] [ant: tangible]
2 imperceptible to the senses or the mind; "an impalpable cloud"; "impalpable shadows"; "impalpable distinctions"; "as impalpable as a dream" [ant: palpable]
3 not perceptible to the touch; "an impalpable pulse"
- Italian: impalpabile
airy, asomatous, astral, atomic, bodiless, branny, chalklike, chalky, comminute, comminuted, corpuscular, crushed, decarnate, decarnated, detrital, detrited, discarnate, disembodied, disintegrated, dusty, efflorescent, embryonic, ethereal, evanescent, extramundane, farinaceous, fine, flaky, floury, furfuraceous, germinal, ghostly, gone to dust, granular, grated, ground, immaterial, imperceptible, imponderable, inappreciable, incorporate, incorporeal, indiscernible, infinitesimal, insensible, insubstantial, intangible, invisible, levigated, mealy, microcosmic, microscopic, milled, molecular, nonmaterial, nonphysical, nonsubstantial, occult, otherworldly, pestled, phantom, powdered, powdery, psychic, pulverant, pulverized, pulverulent, reduced to powder, scaly, scobicular, scobiform, scurfy, shadowy, sharded, shredded, spiritual, subatomic, supernatural, tenuous, thin, transmundane, triturated, ultramicroscopic, unapparent, unappreciable, unconcrete, unearthly, unembodied, unextended, unfleshly, unobservable, unperceivable, unphysical, unseeable, unsolid, unsubstanced, unsubstantial, unworldly, weightless