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to declare war

to declare war

54 4.4
Officially announce that one country will fight another
  • phrasal verb
  • /dɪˈklɛr wɔr/
  • Formal
translation icon : declarar la guerra a
  • Ten days later, King Frederick William of Prussia declared war on France.
  • declare war on Germany
  • power to declare war
  • declare war on England

Older men declare war, but it is the youth that must fight and die.

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Examples

  • Nonetheless, early in its term, the Bush administration declared war on all outstanding international treaties.

    Academic text (2003)
  • Only Congress can declare war.

  • Now the British declared war on us.

  • In response to this, the U.S. has declared war on Canada.

  • Why would we then declare war based on this?

  • We are ready to declare war on both England and France.

  • We and Great Britain declared war on Japan.

  • In 1917, as you know, President Wilson declared war on Germany.

    Fiction book (1996)
  • The attack on Pearl Harbor, President Roosevelt declared war on the Japanese, a date which will live in infamy.

  • The government decided to declare war after the enemy's aggressive actions.

Synonyms

to go to war
vsto declare war
274 3.4

To start fighting in a war between countries or groups

is a formal public announcement of entering armed conflict
to proclaim
vsto declare war
  • Formal
229 5.3

To officially announce something to the public

is used only for announcing entry into armed conflict

Antonyms

89 3.4

To stop arguing and become friendly again

38 5.1

To become friendly again after a disagreement

How Hostile

to invade
380 4.4
to declare war
  • Formal
54 4.4
to go to war
274 3.4
skirmish
22 6.4
to read the riot act
  • Informal
1 7.9
to make a threat
  • Offensive
6 4.2

Surface Forms

declare war infinitive
declared war past participle
declaring war present participle
declares war third person singular

Morphology

declare + war

The meaning is directly and compositionally derived from 'declare' (to formally announce) + 'war' (armed conflict); a learner who knows both words can infer that it means to make a formal announcement of entering a state of war. This construction is cross-linguistically common and follows standard nomination patterns, so it should be immediately understandable to a B1 learner.

Etymology

The phrase declare war comes from the image of a leader making a public, official announcement that their country will fight another. The verb declare means to announce openly and war means open fighting between countries, so the phrase now means 'to officially announce that a country will fight another'.