altruism
/ˈæl.tɹu.ɪz.əm/noun
Unselfish concern for the well-being of other people, without thought for oneself.
Example sentences
- “Volunteering at the shelter every weekend shows real altruism.”
- “Her altruism led her to donate a kidney to a complete stranger.”
The technical opposite of egoism. Biologists use it too, for animal behavior that helps others at a cost to the individual.