dead mail

1. 1.

   mail that can neither be delivered nor returned

   Synonymsdead letter

   Broaderletter

Questions about dead mail

What does dead mail mean?

dead mail means "mail that can neither be delivered nor returned".

What is another word for dead mail?

Close synonyms include dead letter. 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 dead mail a common word?

dead mail is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.