act of war

USAGE SUMMARY

The phrase "act of war" is correct and usable in written English.
It is typically used to describe an action taken by one nation against another that is considered a declaration or initiation of hostilities. Example: "The military strike was deemed an act of war, prompting an immediate response from the international community."

✓ Grammatically correct

News & Media

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

"A real act of war".

The New York Times

This is an act of war.

The Guardian - Opinion

"In an act of war".

The New York Times

This is clearly an act of war.

The Washington Post

"That is an act of war.

The Guardian - Tech

"And this is an act of war".

The New York Times - Sports

"It was an act of war.

The Guardian

"That was an act of war.

The Washington Post

"There was no military response for an act of war".

The New York Times

The Barron memo says it's an act of war.

The New Yorker

Please do not call these atrocities an "act of war".

The Economist

Expert writing Tips

Best practice

Use "act of war" when describing a specific action that violates international law and could trigger a military response. Avoid using it loosely for non-military disputes.

Common error

Avoid labeling minor disagreements or isolated incidents as an "act of war". The term should be reserved for actions with significant and widespread consequences.

Linguistic Context

The phrase "act of war" functions as a noun phrase, typically serving as the subject or object of a sentence. It denotes a specific action that is considered a violation of international norms, justifying a response, often military, as shown in Ludwig's examples.

Expression frequency: Very common

Frequent in

News & Media

70%

Academia

15%

Encyclopedias

5%

Less common in

Formal & Business

3%

Wiki

2%

Science

5%

Ludwig's WRAP-UP

The phrase "act of war" is a significant term used to describe actions that violate international law and could lead to military conflict. As Ludwig AI states, it is grammatically correct and frequently used, particularly in news and media and academic contexts. Its purpose is to classify an event as a serious threat to peace, demanding careful consideration of potential responses. While the term is relatively frequent, it's essential to use it accurately, reserving it for actions with substantial consequences to avoid overstating minor conflicts. Related phrases like "declaration of war" or "hostile action" can provide more precise alternatives depending on the specific context.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

declaration of war

Specifically denotes the formal announcement initiating a state of war.

hostile action

A broader term that includes any unfriendly or aggressive behavior, not necessarily war.

warlike act

Refers to actions resembling or suggestive of war.

act of aggression

Implies an unprovoked attack or invasion.

military intervention

Involves military forces entering a conflict or country.

armed conflict

A general term for fighting between armed forces.

act of hostility

Signifies an unfriendly action indicating animosity.

breach of peace

A violation of a state of peace, often leading to conflict.

casus belli

Latin term for an event or action that justifies or causes a war.

military aggression

Aggressive actions carried out by a military force.

FAQs

How is an "act of war" defined under international law?

International law doesn't provide a single, universally agreed-upon definition, but it generally involves actions by a state that violate the sovereignty, territorial integrity, or political independence of another state, justifying a military response. Such actions may include armed attacks, invasion, or the use of force in a manner that breaches international treaties.

What are some examples of actions that could be considered an "act of war"?

Examples include a surprise military attack, the invasion of another country's territory, or a state-sponsored cyberattack that causes significant damage to critical infrastructure. The key is whether the action is severe enough to justify a military response under international law.

Is every hostile action an "act of war"?

No, not every hostile action constitutes an "act of war". Actions such as economic sanctions, diplomatic protests, or minor border skirmishes are generally not considered acts of war unless they escalate to a level that threatens a state's security or sovereignty. It depends on the severity and intent of the action.

What can I say instead of "act of war"?

Depending on the context, you can use alternatives like "declaration of war", "hostile action", or "military intervention". The best choice depends on the specific nature and implications of the event you are describing.