/ Thesaurus / S Synonyms of subunit Find synonyms for: Noun1. fractional monetary unit, subunit, monetary unitusage: a monetary unit that is valued at a fraction (usually one hundredth) of the basic monetary unitWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language