IPA: /ˈmɜːrsəˌnɛri/
KK: /ˈmɜrsəˌnɛri/
Describing someone who is hired to fight for a foreign army or who acts mainly for money rather than principles.
The mercenary soldiers were known for their willingness to fight for the highest bidder.
A person who is paid to fight for a foreign army or to work for money rather than loyalty or personal reasons.
The mercenary fought bravely, but his true loyalty was to the highest bidder.
Mercenary is derived from "merces" (meaning reward or pay) and the suffix "-ary" (meaning relating to or connected with). The term refers to someone who is motivated by financial gain, particularly in the context of military service.
Think of someone who is 'related to' ('-ary') receiving a 'reward' ('merces') for their work — that's why a mercenary is someone who fights for pay.