/ Thesaurus / T Synonyms of tyrrhenian sea Find synonyms for: Noun1. Tyrrhenian Seausage: an arm of the Mediterranean between Italy and the islands of Corsica and Sardinia and SicilyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: magnanimous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language