/ Thesaurus / B Synonyms of batten down Find synonyms for: Verb1. batten, batten down, secure, strengthen, beef up, fortifyusage: furnish with battens; "batten ships"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language