adjective /ˌæl.tɹuˈɪs.tɪk,ˌæl.tɹuˈɪs.tɪk,ˌɑl.tɹuˈɪs.tɪk/
Regardful of others; beneficent; unselfish
His helping the old lady with her shopping was deemed highly altruistic by everyone, especially since her home was a mile away.
Wikipedia foundation.