/ Thesaurus / S Synonyms of south seas Find synonyms for: Noun1. South Sea, seausage: any sea to the south of the equator (but especially the South Pacific)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language