Crossword Dictionary

ENEMY

enemy, foe, enemies - n 
one that is antagonistic toward another 

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Synonyms

adversary, antagonist, foe, hostile, opponent

merriam-webster

Examples

“One deity for an enemy is bad enough.”

“A woman has no greater enemy than a so-called 'decent' woman.”

“So perished the greatest enemy that the Romans had to encounter in Asia Minor.”

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Etymology

early 13c., "one hateful toward and intent on harming (someone)," from Old French enemi (12c., Modern French ennemi), earlier inimi (9c.) "enemy, adversary, foe; demon, the Devil," from Latin inimicus "an enemy," literally "an unfriend," noun use of adjective meaning "hostile, unfriendly" (source also of Italian nemico, Catalan enamic, Spanish enemigo, Portuguese inimigo), from in- "not" (see in- (1)) + amicus "friend" related to amare "to love" (see Amy). From c. 1300 in English as "adversary of God, unbeliever, heathen, anti-Christian;" late 14c. as "the Devil;" also late 14c. as "member of an armed, hostile body in a war, feud, etc.;" of the opposing military forces as a whole, from c. 1600. From mid-14c. as an adjective.

etymonline