Breadcrumb Home > Thesaurus > E Synonyms of euthanasia Find synonyms for: Noun 1. euthanasia, mercy killing, killing, kill, putting to death usage: the act of killing someone painlessly (especially someone suffering from an incurable illness) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of euthanasia (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: anomie Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language