/ Thesaurus / T Synonyms of thorny amaranth Find synonyms for: Noun1. thorny amaranth, Amaranthus spinosus, herb, herbaceous plantusage: erect annual of tropical central Asia and Africa having a pair of divergent spines at most leaf nodesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language