Breadcrumb Home > Thesaurus > F Synonyms of fr Find synonyms for: Noun 1. francium, Fr, atomic number 87, metallic element, metal usage: a radioactive element of the alkali-metal group discovered as a disintegration product of actinium WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of fr (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: meretricious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language