/ Thesaurus / L Synonyms of lbf. Find synonyms for: Noun1. pound, lbf., force unitusage: a nontechnical unit of force equal to the mass of 1 pound with an acceleration of free fall equal to 32 feet/sec/secWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: aversion Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language