English Reference
Noun

mercenary

n. countable
C1 Advanced US /ˈmɝsəˌnɛɹi/ UK /mˈɜːsənəɹi/ mer·ce·nary UK spelling mercenaries, mercenary's

n.a professional soldier who is paid to fight for a foreign country or group. They work for money rather than for political or personal beliefs.

n.a professional soldier hired to serve in a foreign army. Motivated primarily by financial gain rather than political allegiance or national duty.


SIMPLE

The king hired mercenaries to help defend the city.

CONTEXTUAL

During the conflict, the government relied on highly trained mercenaries to secure the remote oil fields.

COMPLEX

The use of private mercenaries in modern warfare raises complex legal questions regarding accountability and the adherence to international humanitarian laws during armed conflicts.

Usage

Often carries a negative connotation of greed or lack of loyalty.

The Houthis said they had attacked what they ‌described as buildups, weapons and warships belonging to Saudi-backed forces and “mercenaries” in al-Makha with a large number of ballistic missiles, destroying boats and weapons.

Al Jazeera· 14 Aug 2026

The soldiers commonly referred to as Hessian mercenaries weren’t mercenaries by the strict definition of the term.

Smithsonian Magazine· 13 Aug 2026

From Middle English mercenarye (“someone paid to work, hireling”), from Latin mercēnārius (“hired for money”), from mercēs (“reward, wages, price”).

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin mercēnārius
Level C1 · Advanced
Frequency Frequent
Updated