altruist

[al-troo-ist] /ˈæl tru ɪst/
noun
1.
a person unselfishly concerned for or devoted to the welfare of others (opposed to egoist).
Origin
1865-70; < French altruiste; see altruism, -ist
Related forms
hyperaltruist, noun
Examples from the web for altruist
  • The altruist group of decision makers weighted economic, social, and environmental costs nearly equally.
Word Origin and History for altruist
n.

1842, from French; see altruism + -ist.