/ Thesaurus / G Synonyms of gi hormones Find synonyms for: Noun1. gastrointestinal hormone, GI hormones, hormone, endocrine, internal secretionusage: hormones that affect gastrointestinal functioningWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fortuitous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language