/ Thesaurus / C Synonyms of capital gains tax Find synonyms for: Noun1. capital gains tax, tax, taxation, revenue enhancementusage: a tax on capital gains; "he avoided the capital gains tax by short selling"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language