Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “ally”

See all translations

ally

noun [C] uk   /ˈæl.aɪ/ us  
C2 a country that has agreed officially to give help and support to another one, especially during a war: The US is one of Britain's staunchest allies. During the First World War, Turkey and Germany were allies/Turkey was an ally of Germany.
See also
C1 someone who helps and supports someone else: He is generally considered to be the prime minister's closest political ally.
More examples
(Definition of ally from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of ally?
Add Cambridge dictionaries to your browser to your website

Definitions of “ally” in other dictionaries

Word of the Day

hyphen

the symbol -, used to join two words together, or to show that a word has been divided into two parts at the end of one line and the beginning of the next

Word of the Day

Lies, lies, lies!

by Kate Woodford,
February 25, 2015
​​​ According to sociologists (=people who study the relationships between people living in groups), we are good at lying. As a species, we have developed a remarkable ability to deceive each other (= persuade each other that something false is true). Being able to say things that are not true can help with

Read More 

snapchat verb

March 02, 2015
to send someone a message using the photomessaging application Snapchat We used to have a thing until he got a girlfriend. now

Read More