/ Thesaurus / J Synonyms of justifiably Find synonyms for: Adverb1. justifiablyusage: with good reason; "he is justifiably bitter"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language