declare war against (someone or something)

(redirected from declared war against us)

declare war against (someone or something)

1. To officially announce the intention to fight against an enemy country or group in a war. We will have to declare war against the rebels if they advance over our border.
2. To announce the intention to vehemently oppose someone or something. This usage does not refer to physical fighting. The mayor has declared war on crime in our city and is bolstering our police force.
See also: declare, war
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

declare war against someone or something

 and declare war on someone or something 
1. Lit. to formally announce that one will fight a war with someone or some country. A group of countries declared war against the aggressor.
2. . Fig. to announce a serious campaign against a type of person or a serious problem. The president declared war against crime and criminals. The pressure group declared war on waste.
See also: declare, war
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in periodicals archive ?
Salva has declared war against us and we would resist and organize ourselves to resist the government even if that will lead to overthrowing it," he said.
"You declared war against us and bombed us, and we attack you inside your homeland," was a common message among Daesh supporters.
It was not until Japan attacked us and Hitler declared war against us that we declared war against them.
The main breaker of the peace in recent years has been the United States.Since 1945, no nation on Earth has either declared war against us or attacked us.
Remember, we didn't declare war against Japan until it had attacked Pearl Harbor or against Germany until Hitler had declared war against us.