/ Thesaurus / K Synonyms of kingdom plantae Find synonyms for: Noun1. Plantae, kingdom Plantae, plant kingdom, kingdomusage: (botany) the taxonomic kingdom comprising all living or extinct plantsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: exasperate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language