/ Thesaurus / G Synonyms of gee gee Find synonyms for: Noun1. gee-gee, horse, Equus caballususage: a word for horse used by children or in adult slangWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language