Synonyms|5Antonyms|0|Broader|0Narrower|0Related|0
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mail
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pony express(noun, system)
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post office(noun, expression, post, postbag)
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postal communications(noun, expression, post, postbag)
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postbag
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APASmart Define. (2011). mail system thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/mail_system/thesaurus/synonyms
ChicagoSmart Define. 2011. "mail system thesaurus" https://smartdefine.org/mail_system/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2011, mail system thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/mail_system/thesaurus/synonyms>.
MLASmart Define. "mail system thesaurus" 23 May 2011. Web. 21 September 2026. <https://smartdefine.org/mail_system/thesaurus/synonyms>