dead letter

noun

1
: something that has lost its force or authority without being formally abolished
2
: a letter that is undeliverable and unreturnable by the post office

Examples of dead letter in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Trump wants the war to end, but Ukraine will not enjoy lasting peace without guarantees against further Russian aggression, and our allies know that any security guarantee without the U.S. will be a dead letter. Ian Kelly, Chicago Tribune, 21 Feb. 2025 The note makes its way to the desk of Jasper, a seasoned ‘dead letter’ investigator at a 1980s midwestern post office. Matt Grobar, Deadline, 13 Feb. 2025 Today, to our peril, the Monroe Doctrine is becoming a dead letter. Steve Forbes, Forbes, 24 Sep. 2024 Among other films to see is Joe DeBoer and Kyle McConaghy’s SXSW title Dead Mail, in which an ominous help note finds its way to a 1980s post office, connecting a dead letter investigator to a kidnapped keyboard technician. Matt Grobar, Deadline, 5 Sep. 2024 See All Example Sentences for dead letter

Word History

First Known Use

1627, in the meaning defined at sense 1

Time Traveler
The first known use of dead letter was in 1627

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Cite this Entry

“Dead letter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dead%20letter. Accessed 3 Mar. 2025.

Kids Definition

dead letter

noun
1
: something that has lost its force or authority without being abolished
2
: a letter that cannot be delivered or returned by the post office
Last Updated: - Updated example sentences
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