/ Thesaurus / S Synonyms of seven seas Find synonyms for: Noun1. seven seas, body of water, waterusage: an informal expression for all of the oceans of the world; "the old salt had sailed the seven seas"WordNet 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