Breadcrumb Home > Thesaurus > U Synonyms of uncle Find synonyms for: Noun 1. uncle, kinsman usage: the brother of your father or mother; the husband of your aunt 2. uncle, benefactor, helper usage: a source of help and advice and encouragement; "he played uncle to lonely students" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of uncle (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