/ Thesaurus / W Synonyms of water moccasin Find synonyms for: Noun1. water moccasin, cottonmouth, cottonmouth moccasin, Agkistrodon piscivorus, pit viperusage: venomous semiaquatic snake of swamps in southern United States2. water moccasin, water snakeusage: any of numerous North American water snakes inhabiting fresh watersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language