/ Thesaurus / S Synonyms of single tax Find synonyms for: Noun1. single tax, tax, taxation, revenue enhancementusage: a system of taxation in which a tax is levied on a single commodity (usually land)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language