mercenary

American  

[mur-suh-ner-ee] / ˈmɜr səˌnɛr i /

adjective

1. working or acting merely for money or other reward; venal.

   Synonyms:

   covetous, avaricious, acquisitive, grasping

   Antonyms:

   unselfish, idealistic, altruistic

2. hired to serve in a foreign army, guerrilla organization, etc.

---

noun

plural

mercenaries

1. a professional soldier hired to serve in a foreign army.

2. any hireling.

mercenary British  

/ ˈmɜːsɪnərɪ, -sɪnrɪ /

adjective

1. influenced by greed or desire for gain

2. of or relating to a mercenary or mercenaries

---

noun

1. a man hired to fight for a foreign army, etc

2. rare any person who works solely for pay

Other Word Forms

• mercenarily adverb
• mercenariness noun
• nonmercenary adjective
• unmercenarily adverb
• unmercenariness noun
• unmercenary adjective

Etymology

Origin of mercenary

First recorded in 1350–1400; Middle English mercenarie, from Latin mercēnnārius “working for pay, hired worker, mercenary,” perhaps from earlier mercēd(i)nārius (unrecorded), from mercēdin- (unrecorded), variant stem of mercēs “payment, wage” (akin to merx “goods”; cf. merchant) + -ārius -ary

Explanation

You might not want to call a mercenary a "hireling" to his face, but a mercenary is, after all, a soldier who gets paid to fight where needed, sometimes taking a heroic stand and other times just wanting payment for fighting. The word mercenary comes from the Latin mercēnārius, "hireling," which defines someone who will do anything in exchange for money. In history, a mercenary was often a fighter who followed the next paycheck, but in recent decades it's also been used for fighters who pursue a good cause in areas where soldiers are in short supply. A synonym for mercenary is "soldier of fortune," and this phrase sometimes glorifies the mercenary, turning the meaning of "fortune" from "cash" to "luck in battle."

Example Sentences

Working as a mercenary or fighting on behalf of another government is also illegal in South Africa, unless the government authorises it.

From BBC • Mar. 22, 2026

He resurfaced later on social-media posts from the front lines, standing next to a Russian wearing the military patch of the Wagner mercenary group.

From The Wall Street Journal • Mar. 11, 2026

Those glimpses of humanity had a way of rendering the mercenary atmosphere in the tent city incredibly disorienting—almost unreal.

From Slate • Feb. 23, 2026

Frank Capra, the multiple Academy Award winner whose everyman heroes symbolized the American spirit triumphing over mercenary or venal big business and big government, died Tuesday at his desert retirement home.

From Los Angeles Times • Dec. 23, 2025

Now I know Mother will shake her head, and the girls say, “Oh, the mercenary little wretch!”

From "Little Women" by Louisa May Alcott

Related Words

• acquisitive
• selfish
• unscrupulous