“al-true-is-tic” | /ˌæl.tɹuˈɪs.tɪk/
adj -Regardful of others; beneficent; unselfish.
“His helping the old woman with her shopping was deemed highly altruistic by everyone, especially since her home was a mile away.”
English from 1853. From French altruisme, which was coined in 1830 by Auguste Comte from autrui (“of or to others”) + -isme, from Old French, from Latin alteri, dative of alter (“other”) (from which also English alter). Apparently inspired by the French Latin legal phrase l’autrui, from le bien, le droit d’autrui (“the good, the right of the other”). Introduced into English by George Henry Lewes in 1853, in his translation Comte’s Philosophy of the Sciences, 1, xxi.