| Weightless (a.) Having no weight; imponderable; hence, light. Thesaurus Entries airy, bodiless, bubbly, downy, ethereal, featherweight, feathery, fluffy, foamy, frothy, gossamery, immaterial, impalpable, imponderable, imponderous, incorporeal, insubstantial, intangible, leger, light, light as air, lighter than vanity, lightweight, mousse, nonsubstantial, souffle, unconcrete, unheavy, unsolid, unsubstanced, unsubstantial, volatile, yeasty |