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enemy

American  
[en-uh-mee] / ˈɛn ə mi /

noun

  • enemies
    plural
  1. a person who feels hatred for, fosters harmful designs against, or engages in antagonistic activities against another; an adversary or opponent.

    Synonyms:
    antagonist
    Antonyms:
    friend
  2. an armed foe; an opposing military force.

    The army attacked the enemy at dawn.

    Antonyms:
    ally
  3. a hostile nation or state.

  4. a citizen of such a state.

  5. enemies, persons, nations, etc., that are hostile to one another.

    Let's make up and stop being enemies.

  6. something harmful or prejudicial.

    His unbridled ambition is his worst enemy.

  7. the Enemy, the Devil; Satan.


adjective

  1. belonging to a hostile power or to any of its nationals.

    enemy property.

  2. Obsolete. inimical; ill-disposed.

enemy British  
/ ˈɛnəmɪ /

noun

  1. a person hostile or opposed to a policy, cause, person, or group, esp one who actively tries to do damage; opponent

    1. an armed adversary; opposing military force

    2. ( as modifier )

      enemy aircraft

    1. a hostile nation or people

    2. ( as modifier )

      an enemy alien

  2. something that harms or opposes; adversary

    courage is the enemy of failure

"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

Grammar

See collective noun.

Synonym Usage

Enemy, foe refer to a dangerous public or personal adversary. Enemy emphasizes the idea of hostility: to overcome the enemy; a bitter enemy. Foe, a more literary word, may be used interchangeably with enemy, but emphasizes somewhat more the danger to be feared from such a one: deadly foe; arch foe of humankind ( the Devil ).

Other Word Forms

Derived Forms

Inflected Forms

Nouns


Etymology

Origin of enemy

First recorded in 1300–1350; Middle English enemi, from Anglo-French, Old French, from Latin inimicus “unfriendly,” equivalent to in- in- 3 + amicus “friendly, friend”; see amicable


Explanation

An enemy is a hostile opponent, like your sworn Scrabble enemy who vows to get revenge on your last triple word score. An enemy is a person who actively opposes someone or something. The Latin word inimicus, meaning "hostile, unfriendly," is the root of enemy, and it comes from the prefix in-, or "not," and amicus, "friend:" an enemy is "not a friend." When two armies fight each other, they both think of the opposing army as the enemy.

Keep Reading on Vocabulary.com

Vocabulary lists containing enemy

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:

Beneath the battle for aerial superiority, unmanned ground vehicles scurry back and forth delivering supplies, evacuating the wounded or, increasingly, leading the charge against the enemy.

From BBC ● Oct. 16, 2026

Lev Stupnikov fed troop locations and battle plans to the enemy before making a daring escape.

From The Wall Street Journal ● Oct. 16, 2026

“Music Against the Night” is the story of two children, an orphan and a musical prodigy, both of whom are born at a time when European culture was the enemy of children.

From Los Angeles Times ● Oct. 13, 2026

The sightings were treated as suspicious by the U.K. military, which deployed teams with drone-jamming equipment to the bases, including the Orcus antidrone system, which can remotely take control of an enemy drone.

From The Wall Street Journal ● Oct. 8, 2026

We are most definitely the enemy, and they worried at seeing me.

From "Woodsong" by Gary Paulsen

Nobody gets a quote on air defenses for a server farm unless the server farm has enemies.

From MarketWatch ● Oct. 14, 2026

For John and Adelaide, adults are not the only enemies.

From Los Angeles Times ● Oct. 13, 2026

At the same time, bacteria are not simply enemies to eliminate.

From Science Daily ● Oct. 7, 2026

Would these officials be less inclined than Rafsanjani to use mass-casualty terrorism against their enemies?

From The Wall Street Journal ● Oct. 2, 2026

But he still needed a lady, a lady to dream about, a lady to receive homage from his defeated enemies.

From "Adventures of Don Quixote" by Argentina Palacios

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