A person hired to fight for another country than their own WordNet 3.0 & Open English WordNet

A mercenary – also called a soldier of fortune, a hired gun, a freelance, or a sellsword – is a private individual who joins an armed conflict for personal profit, is otherwise an outsider to the conflict, and is not a member of any other official military. Wikipedia

Person primarily concerned with making money at the expense of ethics, most often used to refer to a soldier who fights for hire. Wikipedia Disambiguation

Soldier who fights for hire Wikidata

A person hired to fight for another country than their own. OmegaWiki

A person employed to fight in an armed conflict who is not a member of the state or military group for which they are fighting and whose primary motivation is private gain. Wiktionary

Person employed to fight. Wiktionary (translation)

A non-commissioned soldier willing to serve any state or person who will hire him. Wiktionary