Synonyms of weightless

1 Syllable
slight, sheer, buoyant, small, thin
2 Syllables
dainty, loose, porous, crumbly, lithe, airy, frothy, trifling, lightweight, floating, flimsy, sprightly, trivial, slender, petty, filmy, downy, little, nimble, fluffy, spongy, easy, friable, meager, sandy
3 Syllables
portable, light-footed, floatable, unheavy, graceful, sylphlike, featherweight, ethereal, lightfooted, agile, feathery
4 Syllables
atmospheric, gossamery, imponderous, tissuelike, effervescent, supernatant, delicate, insubstantial, unsubstantial
5 Syllables
inconsequential