enemy

noun

en·​e·​my ˈe-nə-mē 

plural enemies

1

: one that is antagonistic to another

especially : one seeking to injure, overthrow, or confound an opponent

2

: something harmful or deadly

alcohol was his greatest enemy

3

a

: a military adversary

b

: a hostile unit or force

Synonyms of enemy

• opponent
• foe
• hostile

Examples of enemy in a Sentence

He made a lot of enemies during the course of his career.

Tradition is the enemy of progress.

Recent Examples on the Web

Over the last year, the Taiwanese Navy has been practicing the rapid deployment of cheap and domestically produced smart mines for the sea — a potential bulwark against enemy blockades of ports and hostile invasion forces. —Los Angeles Times, 12 May 2026

The spark for Dhont came with encountering a simple black-and-white photo of a soldier cross-dressing just behind enemy lines. —David Canfield, HollywoodReporter, 12 May 2026

Just because a work of art has a political statement, it should not be considered an enemy of art. —Rachel Handler, Vulture, 12 May 2026

Spain’s Rif War, where future Spanish dictator Francisco Franco won his spurs, served as a crucible for the values and military tactics of the 1936-39 Spanish Civil War where Franco treated his Republican enemy with the same humanity dealt out to Rif inhabitants. —John Hopewell, Variety, 12 May 2026

Word History

Etymology

Middle English enmy, enemi, borrowed from Anglo-French enemi, going back to Latin inimīcus, noun derivative of inimīcus, adjective, "of an opponent, unfriendly, hostile," from in- in- entry 1 + amīcus "friendly, well-disposed, loving" — more at amiable

First Known Use

13th century, in the meaning defined at sense 1

Phrases Containing enemy

• behind enemy lines
• enemy territory
• mortal enemy
• public enemy number one

Kids Definition

enemy

noun

en·​e·​my ˈen-ə-mē 

plural enemies

1

: one that tries to hurt or overthrow or that seeks the failure of another

2

: something that harms

3

a

: a nation with which a country is at war

b

: a military force or a person belonging to such a nation

Etymology

Middle English enemi "enemy," from early French enemi (same meaning), from Latin inimicus (same meaning), from in- "not" and amicus "friend"