first-class mail

1. 1.

   mail that includes letters and postcards and packages sealed against inspection

   Synonymsfirst class1st class1st-class mail

   Broadermail

   Narrowercorrespondence

Questions about first-class mail

What does first-class mail mean?

first-class mail means "mail that includes letters and postcards and packages sealed against inspection".

What is another word for first-class mail?

Close synonyms include first class, 1st class, 1st-class mail. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is first-class mail a common word?

first-class mail is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.