letter of last resort

noun

A handwritten letter from the British Prime Minister to the commanding officers of nuclear submarines, specifying the action to be taken if an enemy nuclear strike destroys the British government.

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Meanings

nounletter of last resort (plural letters of last resort)

plural letters of last resort

  1. A handwritten letter from the British Prime Minister to the commanding officers of nuclear submarines, specifying the action to be taken if an enemy nuclear strike destroys the British government.
Cite this entry
APA

letter of last resort. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/letter%20of%20last%20resort

MLA

“letter of last resort.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/letter%20of%20last%20resort. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “letter of last resort,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/letter%20of%20last%20resort.

Source: letter of last resort on Wiktionary, CC BY-SA 4.0.