/ Thesaurus / H Synonyms of heartseed Find synonyms for: Noun1. heartseed, Cardiospermum grandiflorum, soapberry vineusage: herbaceous vine of tropical America and AfricaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language