inessential, tenuous, unreal, intangible, apparitional, nonexistence, vacuous, empty, illusory, unconcrete, immaterial, spectral, vacant, phantasmal, chimerical, ethereal, null, impalpable, insignificance, unsubstantial.

buoyant, feathery, gossamer, delicate, light, airy.

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

It was practically weightless, though it would fall slowly if left to itself, for the mass of the Ancient Mariner and the front end of the Thessian ship made a considerable attractive field. - "Invaders from the Infinite", John Wood Campbell.

Anisty staggered, gasping, reeled, struck Maitland once or twice upon the chest,- feeble, weightless elbow- jabs that went for nothing, then concentrated his energies in a vain attempt to wrench the hands from his throat. - "The Brass Bowl", Louis Joseph Vance.

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", Charles Willard Diffin.

weightiness, weightlessly, weightlift, weighted, weightlessness, system of weights, weirdness, weighting, weightily.