altruist
/ˈæl.tru.ɪst/
noun
- A person who cares about the needs and happiness of others more than their own, often helping without expecting anything in return.
- My grandmother is a true altruist who spends every weekend volunteering at the animal shelter.
- An altruist might give up their seat on the bus to someone who looks tired, just to be kind.
- The billionaire became a well-known altruist, donating millions to build schools in poor countries.