/ Thesaurus / B Synonyms of board up Find synonyms for: Verb1. board up, coverusage: cover with wooden boards; "board up windows before the hurricane"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: industrious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language