/ Thesaurus / B Synonyms of beta endorphin Find synonyms for: Noun1. beta endorphin, endorphinusage: an endorphin produced by the pituitary gland that suppresses painWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language