Thesaurus

Synonyms for Colourless include:

achromatic, argent, arid, ash-gray, ash-grey, ashen, ashy, black-gray, black-grey, blackish, blackish-gray, blackish-grey, blanched, bleached, bloodless, blue-black, blue-gray, blue-grey, blue-white, bluish black, bluish-gray, bluish-grey, bluish-white, bovine, brown-black, brown-gray, brown-grey, brownish-black, brownish-gray, brownish-grey, canescent, chalky, charcoal, charcoal-gray, charcoal-grey, coal-black, colorless, colourless, cool-white, cottony-white, dark-gray, dark-grey, desiccate, desiccated, drab, dreary, dull, dull-white, dulled, ebon, ebony, etiolate, etiolated, faded, gray, gray-black, gray-white, grayish, grayish-black, grayish-white, green-white, greenish-gray, greenish-grey, greenish-white, grey, grey-black, grey-white, greyed, greyish, greyish-black, greyish-white, heavy, hueless, humdrum, ink-black, inky, inky-black, iron-gray, iron-grey, jet, jet-black, lackluster, lacklustre, leaden, lily-white, livid, lurid, lusterless, lustreless, milk-white, monotonous, neutral, off-white, olive-gray, olive-grey, oxford-gray, oxford-grey, pale, pallid, pastelike, pasty, pearl gray, pearl grey, pearly, pearly-white, pinkish-white, pitchy, prefaded, purple-black, purple-white, purplish-black, purplish-white, red-gray, red-grey, reddish-gray, reddish-grey, sable, silver, silver-gray, silver-grey, silver-white, silverish, silvery, silvery-gray, silvery-grey, silvery-white, slate-black, slate-gray, slate-grey, slatey, slaty, slaty-gray, slaty-grey, snow-white, snowy, sober, somber, sombre, soot-black, sooty, sooty-black, spiritless, stone-gray, stone-grey, unanimated, violet-black, wan, washed-out, washy, waxen, waxlike, waxy, white, white-flowered, whitened, whitish, yellow-gray, yellow-grey, yellow-white, yellowish-gray, yellowish-grey, yellowish-white

colourless is a ADJ.