Dictionary.com
Thesaurus.com
Jump To:
  • Allies
    Allies
    plural noun
    (in World War I) the powers of the Triple Entente (Great Britain, France, Russia), with the nations allied with them (Belgium, Serbia, Japan, Italy, etc., not including the United States), or, loosely, with all the nations (including the United States) allied or associated with them as opposed to the Central Powers.
  • allies
    allies
    noun
    the plural of ally
Synonyms

Allies

American  
[al-ahyz, uh-lahyz] / ˈæl aɪz, əˈlaɪz /

plural noun

  1. (in World War I) the powers of the Triple Entente (Great Britain, France, Russia), with the nations allied with them (Belgium, Serbia, Japan, Italy, etc., not including the United States), or, loosely, with all the nations (including the United States) allied or associated with them as opposed to the Central Powers.

  2. the 26 nations that fought against the Axis in World War II and, with subsequent additions, signed the charter of the United Nations in San Francisco in 1945.

  3. the member nations of NATO.


Allies 1 British  
/ ˈælaɪz /

plural noun

  1. (in World War I) the powers of the Triple Entente (France, Russia, and Britain) together with the nations allied with them

  2. (in World War II) the countries that fought against the Axis. The main Allied powers were Britain and the Commonwealth countries, the US, the Soviet Union, France, China, and Poland See also Axis

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

allies 2 British  
/ ˈælaɪz /

noun

  1. the plural of ally

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Allies Cultural  
  1. The victorious allied nations of World War I and World War II. In World War I, the Allies included Britain, France, Italy, Russia, and the United States. In World War II, the Allies included Britain, France, the Soviet Union, and the United States.


Etymology

Origin of Allies

Plural of ally


Compare meaning

How does allies compare to similar and commonly confused words? Explore the most common comparisons:


Explanation

In war, allies are friends — specifically, friendly nations — you can trust. Allies are on your side. The main meaning of this word comes from war. Without allies, a country is going to be all alone in a war. Like many other words of war, this term spread beyond the battlefield. A politician trying to pass a law is going to need allies, probably in both political parties. Any time there's a disagreement or conflict, it helps to have allies: if you don't, you're all alone.

Keep Reading on Vocabulary.com

Vocabulary lists containing allies

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Allies are currently bracing for possible cuts to US forces in Europe as the Pentagon conducts a review of its deployments on the continent.

From Barron's ● Oct. 12, 2026

President Gitanas Nausėda wrote on X: "With Russia intensifying its aggression against Ukraine, such readiness is vital for our region. Together with our Nato Allies, Lithuania will defend its airspace."

From BBC ● Sep. 15, 2026

After the Second World War ended, the Allies disposed of tons of ammunition by dumping it into the ocean so it could not fall into the wrong hands.

From Science Daily ● Sep. 14, 2026

“When the Allies declared World War II over after Japan’s surrender,” Mr. Van de Ven notes, “they did not describe a reality but expressed a hope.”

From The Wall Street Journal ● Sep. 11, 2026

The Allies had agreed on a plan to break the stalemate.

From "The War to End All Wars: World War I" by Russell Freedman

UK Defence Secretary Wes Streeting said the exercise showed Britain, France and their allies were stepping up preparation for the day when peace came to Ukraine.

From BBC ● Nov. 3, 2026

The two were considered allies who shared homelessness as their top concern in the city, with Bass leading from her executive office and Raman chairing the City Council’s Housing and Homelessness Committee.

From Los Angeles Times ● Nov. 2, 2026

"Despite the stalemate outcome following the Israeli elections, the chances of a diplomatic breakthrough may be improving following intensified mediation efforts by Qatar and regional allies," said FOREX.com's Razan Hilal.

From Barron's ● Nov. 2, 2026

Bounding these waters is a trio of U.S. allies and partners—Japan, Taiwan and the Philippines—that are a part of what strategists call the first island chain.

From The Wall Street Journal ● Nov. 2, 2026

And because when she’d been in Endovier, the allies she’d made hadn’t been the darlings of the overseers, but the ones the overseers had hated most.

From "Throne of Glass" by Sarah J. Maas

Random Word

Spin the wheel and learn a new word!

Get a word


Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training