Breadcrumb Home > Thesaurus > E Synonyms of enkephalin Find synonyms for: Noun 1. enkephalin, endorphin usage: an endorphin having opiate qualities that occurs in the brain and spinal cord and elsewhere WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of enkephalin (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: fatuous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language