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.

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.

词组	declare war against (someone or something)
释义	declare war against (someone or something) 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. 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. See also: declare war against clash clash against clash against (someone or something) gang up against (someone or something) get up against get up against (someone or something) against against (someone or something) hedge against
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