/ Thesaurus / W Synonyms of western ragweed Find synonyms for: Noun1. western ragweed, perennial ragweed, Ambrosia psilostachya, ragweed, ambrosia, bitterweedusage: coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and MexicoWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language