/ Thesaurus / H Synonyms of home key Find synonyms for: Noun1. tonic key, home key, key, tonalityusage: the basic key in which a piece of music is writtenWordNet 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