Breadcrumb Home > Thesaurus > P Synonyms of presumably Find synonyms for: Adverb1. presumably, presumptivelyusage: by reasonable assumption; "presumably, he missed the train"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of presumably (Dictionary) ✖ Related Content Daily Word Quiz: solecism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language