Breadcrumb Home > Thesaurus > J Synonyms of jan Find synonyms for: Noun 1. January, Jan, Gregorian calendar month usage: the first month of the year; begins 10 days after the winter solstice WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of jan (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