unmercenary
/(ˌ)ʌnˈməːs(ɪ)n(ə)ri/ /(ˌ)ʌnˈməːs(ə)nri/adjective
Not motivated by the pursuit of material gain; without the desire for money or material reward.
Origin
Early 17th century; earliest use found in Thomas Dekker (c1572–1632), playwright and pamphleteer. From un- + mercenary.