/ Thesaurus / H Synonyms of heartrot Find synonyms for: Noun1. heartrot, plant diseaseusage: any plant disease in which the central part of a plant rots (especially in trees)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language