/ Thesaurus / C Synonyms of cycloserine Find synonyms for: Noun1. cycloserine, antibiotic, antibiotic drugusage: an antibiotic that is especially active against the tubercle bacillusWordNet 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