/ Thesaurus / F Synonyms of freeboard deck Find synonyms for: Noun1. freeboard deck, upper deckusage: the uppermost watertight deckWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language