imponderable Synonyms

less important shadowy invisible intangible insubstantial insensible infinitesimal infinite inestimable indistinguishable indiscernible incorporeal spiritual subtle unperceivable unobservable unnoticeable nonphysical weightless volatile vague unworldly unsubstantial unearthly supernatural incorporate inconceivable incomprehensible elusive disembodied discarnate disbodied corpuscular buoyant boundless bodiless astatic asomatous airy ephemeral erratic incalculable inappreciable imperceptible impalpable immense immeasurable immaterial imaginary ghostly