1st-class mail

All possible synonyms of the word 1st-class mail as well as its hypernyms, hyponyms, antonyms, derivations, entailments, meronyms, pertainyms, domain members, similar words, verb groups, and so on...

First class, 1st class, first-class mail, 1st-class mail


  • mail that includes letters and postcards and packages sealed against inspection


  • first class
  • 1st class
  • first-class mail
  • 1st-class mail


  • mail: the bags of letters and packages that are transported by the postal service


  • correspondence: communication by the exchange of letters

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