THESAURUS
toneless
achromatic, achromic, anemic, ashen, ashy, bled white, bloodless, cadaverous, chloranemic, colorless, dead, deadly pale, deathly pale, dim, dimmed, dingy, discolored, droning, dull, etiolated, exsanguinated, exsanguine, exsanguineous, faded, faint, fallow, flat, ghastly, gray, haggard, hueless, hypochromic, lackluster, leaden, livid, lurid, lusterless, mat, mealy, monotone, monotonic, muddy, neutral, pale, pale as death, pale-faced, pallid, pasty, sallow, sickly, soniferous, sonorous, sounded, sounding, tallow-faced, tonal, uncolored, wan, washed-out, waxen, weak, whey-faced, white