weapon of last resort

noun phrase

: a weapon that is only used if its use cannot be avoided
see pesticides as the weapon of last resort against garden pests

Examples of weapon of last resort in a Sentence

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Until now, the Strait has been Tehran’s weapon of last resort, to be deployed only when all else fails. — Bobby Ghosh, Time, 25 Mar. 2026

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“Weapon of last resort.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/weapon%20of%20last%20resort. Accessed 24 Sep. 2026.

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