declare war

idiom

Definition of declare war

: to officially decide to fight or go to war Congress has the power to declare war on/against other countries. often used figurativelyThe state has declared war on illiteracy.

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“Declare war.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/declare%20war. Accessed 21 Jan. 2021.

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