/ Thesaurus / I Synonyms of io moth Find synonyms for: Noun1. io moth, Automeris io, saturniid, saturniid mothusage: large yellow American moth having a large eyelike spot on each hind wing; the larvae have stinging spinesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language