/ Thesaurus / G Synonyms of gym rat Find synonyms for: Noun1. gym rat, addict, nut, freak, junkie, junkyusage: someone who spends all leisure time playing sports or working out in a gymnasium or health spaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language