Word Study
weightless
CIDE DICTIONARY
weightless, a.
Having no weight; imponderable; hence, light. Shak. [1913 Webster]
OXFORD DICTIONARY
weightless, adj. (of a body, esp. in an orbiting spacecraft etc.) not apparently acted on by gravity.
Derivative
weightlessly adv. weightlessness n.
THESAURUS
weightless
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, yeastyROGET THESAURUS
weightless
Levity
N levity, lightness, imponderability, buoyancy, volatility, feather, dust, mote, down, thistle, down, flue, cobweb, gossamer, straw, cork, bubble, balloon, float, buoy, ether, air, leaven, ferment, barm, yeast, lighter-than-air balloon, helium balloon, hydrogen balloon, hot air balloon, convection, thermal draft, thermal, light, subtile, airy, imponderous, imponderable, astatic, weightless, ethereal, sublimated, gossamery, suberose, suberous, uncompressed, volatile, buoyant, floating, portable, light as a feather, light as a thistle, light as air, lighter than air, rise like a balloon, float like a balloon.For further exploring for "weightless" in Webster Dictionary Online