/ Thesaurus / B Synonyms of beet armyworm Find synonyms for: Noun1. beet armyworm, Spodoptera exigua, caterpillarusage: moth larva that eats foliage of beets and other vegetablesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language