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Definition ally in British English

ally noun

noun
/ˈælaɪ/
1

a country that makes an agreement with another country that they will work together to help each other, especially in a war

Example

the United States and its European allies

Synonyms and related words
1.1

the countries that united to fight against Germany in the First and Second World Wars, or against Iraq in the Gulf War

Synonyms and related words
2

someone who is ready to help you, especially against someone else who is causing problems for you

Example

If you're going to succeed in this job you will need allies.

Synonyms and related words
Definition ally in British English