Altruistic
ˌæltruˈɪstɪk
adjective
Concerned with others' welfare rather than one's own advantage.
Altruistic describes the purpose behind an action or attitude. An action that benefits someone else is not automatically altruistic if it is performed only for personal gain.
See how T. E. Lawrence uses "altruistic", with its meaning, pronunciation and a real book example.
Examples from books
They burned the captured trucks and damaged a bridge; but perfunctorily, for, as usual after victory, everyone was too loaded and too hot to care for altruistic labour.
T. E. Lawrence
Seven Pillars of Wisdom