/ Thesaurus / S Synonyms of sack coat Find synonyms for: Noun1. sack coat, coatusage: man's hiplength coat with a straight back; the jacket of a suitWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language