/ Thesaurus / S Synonyms of snail mail Find synonyms for: Noun1. snail mail, mail, mail service, postal service, postusage: any mail that is physically delivered by the postal service; "email is much faster than snail mail"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language