altruism

/ˈæltruˌɪzəm/
noun
  1. The selfless concern for the well-being of others; acting to help others without expecting a reward.
    • Her altruism led her to volunteer at the shelter every weekend.
    • Altruism is rare in the animal kingdom, but some species share food with others.
    • The billionaire's donation was an act of pure altruism, with no publicity sought.
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