/ Thesaurus / V Synonyms of viii Find synonyms for: Noun1. eight, 8, VIII, eighter, eighter from Decatur, octad, ogdoad, octonary, octet, digit, figureusage: the cardinal number that is the sum of seven and oneAdjective1. eight, 8, viii, cardinal (vs. ordinal)usage: being one more than sevenWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language