/ Thesaurus / P Synonyms of prop root Find synonyms for: Noun1. prop root, rootusage: a root that grows from and supports the stem above the ground in plants such as mangrovesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: bibliophile Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language