/ Thesaurus / S Synonyms of sunk fence Find synonyms for: Noun1. sunk fence, ha-ha, haw-haw, ditchusage: a ditch with one side being a retaining wall; used to divide lands without defacing the landscapeWordNet 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