/ Thesaurus / M Synonyms of moth mullein Find synonyms for: Noun1. moth mullein, Verbascum blattaria, mullein, flannel leaf, velvet plantusage: European mullein with smooth leaves and large yellow or purplish flowers; naturalized as a weed in North AmericaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language