/ Thesaurus / S Synonyms of sea serpent Find synonyms for: Noun1. sea serpent, legendary creatureusage: huge creature of the sea resembling a snake or dragonWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language