a legal state created by a declaration of war and ended by official declaration during which the international rules of war apply
"war was declared in November but actual fighting did not begin until the following spring"
a concerted campaign to end something that is injurious
"the war on poverty"
"the war against crime"
Organized, large-scale, armed conflict between countries or between national, ethnic, or other sizeable groups, usually involving the engagement of military forces.
"The compiler flagged a potential war between two cache lines that were being written and read simultaneously."
Initialism of write after read, a kind of data hazard.
In plain English: War is a long and violent fight between countries or groups of people.
"The war ended after many years of fighting."
Usage: The term WAR is a technical computer science acronym for Write After Read and refers to a specific type of data hazard in processor pipelines. In everyday language, war describes an armed conflict between nations or groups, not a programming concept.
make or wage war
"The dictator threatened to wage war against any nation that refused to recognize his regime."
To engage in conflict (may be followed by "with" to specify the foe).
"The two neighboring nations finally decided to war after years of escalating tensions along their shared border."
In plain English: To fight or engage in a violent conflict with someone else.
"The two neighbors ended up at war over whose turn it was to take out the trash."
Usage: Use the verb war to describe the act of engaging in armed conflict or fighting against an opponent, often specified with the preposition "with." This usage typically refers to physical battles rather than metaphorical struggles.
The personification of war, often depicted in armor and riding a red horse.
"The online forum was flooded with users posting the initialism WAR, which stands for White Aryan Resistance, after a controversial political speech."
Initialism of White Aryan Resistance.
The word war entered English from Anglo-Norman and Old Northern French, where it originally meant confusion or quarrel before coming to signify armed conflict. It gradually replaced older native terms like beadu and hild as the standard general term for fighting during the Middle English period.