Breadcrumb Home > Thesaurus > O Synonyms of obedience plant Find synonyms for: Noun1. arrowroot, American arrowroot, obedience plant, Maranta arundinaceae, marantausage: white-flowered West Indian plant whose root yields arrowroot starchWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: deracinate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language