/ Thesaurus / A Synonyms of achromatic colour Find synonyms for: Noun1. achromatic color, achromatic colour, color, colour, coloring, colouringusage: a color lacking hue; white or grey or blackWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language