Breadcrumb Home > Thesaurus > P Synonyms of postmark Find synonyms for: Noun1. postmark, marker, marking, markusage: a cancellation mark stamped on mail by postal officials; indicates the post office and date of mailingVerb1. postmark, frank, stampusage: stamp with a postmark to indicate date and time of mailingWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of postmark (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