/ Thesaurus / E Synonyms of east coast Find synonyms for: Noun1. East Coastusage: the eastern seaboard of the United States (especially the strip between Boston and Washington D.C.)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: denizen Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language