/ Thesaurus / P Synonyms of postal card Find synonyms for: Noun1. postcard, post card, postal card, mailing-card, cardusage: a card for sending messages by post without an envelopeWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language