/ Thesaurus / M Synonyms of methapyrilene Find synonyms for: Noun1. methapyrilene, antihistamineusage: antihistamine used to treat allergic responses (as rhinitis or dermatitis or pruritus)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pallid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language