Synonyms for Weightless:

adj.

light (adjective)
airy, buoyant, delicate, ethereal, feathery, gossamer, light, lightweight, unsubstantial, light as a feather.
unsubstantial (adjective)
apparitional, chimerical, empty, ethereal, illusory, immaterial, impalpable, inessential, insignificance, intangible, nonexistence, null, phantasmal, spectral, tenuous, unreal, unsubstantial, vacant, vacuous, unconcrete.

n.

counterweight, dead weight, dense, density, heavy, lightweight, load, net, nett, light as a feather.

Other synonyms:

lightweight. Other relevant words:
lightweight, light as a feather.

Usage examples for weightless

  1. Still hardly more than half- conscious, lying, it seemed, on a soft bed where he was weightless he stirred and flung out one arm. – The Finding of Haldgren by Charles Willard Diffin