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  • allied
    allied
    adjective
    joined by treaty, agreement, or common cause.
  • Allied
    Allied
    adjective
    of or relating to the Allies
Synonyms

allied

American  
[uh-lahyd, al-ahyd] / əˈlaɪd, ˈæl aɪd /

adjective

  1. joined by treaty, agreement, or common cause.

    allied nations.

  2. related; kindred.

    allied species.

    Synonyms:
    akin
  3. Allied, of or relating to the Allies.


allied 1 British  
/ ˈælaɪd, əˈlaɪd /

adjective

  1. joined, as by treaty, agreement, or marriage; united

  2. of the same type or class; related

"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

Allied 2 British  
/ ˈælaɪd /

adjective

  1. of or relating to the Allies

"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

Other Word Forms


Etymology

Origin of allied

A Middle English word dating back to 1250–1300; see origin at ally, -ed 2


Explanation

Allied means united or joined together. If two countries are allied, they are on the same side and have common interests. When two people are allied, they are friendly — or at least cooperative. To be allied means to have an agreement to work together, so when politicians are allied on a bill, they've pledged to join forces and unite for a common cause. In a war, allied countries are fighting on the same side. Allied comes from ally, which first meant "join in marriage," from the Latin root alligare, "bind to."

Keep Reading on Vocabulary.com

Vocabulary lists containing allied

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:

The message from 1809 -- detailing French and allied troops' positions in two dozen lines of symbols, numbers and letters -- had lain ignored in an online academic archive.

From Barron's ● Oct. 16, 2026

Ukrainian intelligence services have developed their own data on Russian infrastructure and military assets using a mix of allied intelligence, Ukrainian drones, human intelligence and other sources including hacked video cameras inside Russia.

From The Wall Street Journal ● Oct. 15, 2026

“It’s important to say that these are collaborations. In and of myself, I’m probably going to fail, but allied with talented people I have a better chance,” he said.

From Los Angeles Times ● Oct. 13, 2026

By forcing adversaries to burn through expensive interceptors, the incoming swarms can exhaust allied air defenses.

From The Wall Street Journal ● Sep. 27, 2026

The early sixteenth century was a bad time for the Roman Catholic Church and its allied heads of state in Europe.

From "The Story of Music" by Howard Goodall

Recognizing its importance to Germany's nuclear ambitions, Allied forces targeted the plant through sabotage and bombing operations.

From Science Daily ● Oct. 16, 2026

Army’s Counter Intelligence Corps, Steinberg is sent to Flensburg, a former German naval academy now under Allied control, where he is put in charge of Gen. Alfred Jodl.

From The Wall Street Journal ● Oct. 5, 2026

NATO’s top military role is held by the Supreme Allied Commander for Europe, or Saceur, a position that has always been held by an American since it was first filled by Dwight Eisenhower in 1950.

From The Wall Street Journal ● Sep. 19, 2026

The collection was later recovered by Allied forces and given to the Dutch government, with the diptych being sold to the Norton Simon in 1971.

From Los Angeles Times ● Sep. 16, 2026

Wild celebrations were breaking out across the country, as Americans everywhere cheered the Allied victory.

From "Spies: The Secret Showdown Between America and Russia" by Marc Favreau

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