/ Thesaurus / P Synonyms of potato worm Find synonyms for: Noun1. tomato hornworm, potato worm, Manduca quinquemaculata, caterpillarusage: large green white-striped hawkmoth larva that feeds on tomato and potato plants; similar to tobacco hornwormWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language