/ Thesaurus / B Synonyms of best of all Find synonyms for: Adverb1. best of allusage: especially fortunate; "best of all, we don't have any homework!"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language