/ Thesaurus / H Synonyms of hyoscyamus muticus Find synonyms for: Noun1. Egyptian henbane, Hyoscyamus muticus, herb, herbaceous plantusage: poisonous herb whose leaves are a source of hyoscyamineWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language