This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. One imbued with altruism;

n. One imbued with altruism; -- opposed to egoist.

n. One who practises altruism; a person devoted to the welfare of others: opposed to egoist.

n. someone who makes charitable donations intended to increase human well-being

"In any case, the nhl. com article claiming that he took less in the way of salary because he's an altruist is On The Drugs."

egoist   

bestower    donor    giver    conferrer    presenter   

altruistic    altruism   

Nobel    commodore vanderbilt    peter cooper    john davison rockefeller    solomon guggenheim    Mellon    Hopkins    andrew carnegie    milton snavely hershey    william richard morris   

philanthropist   

prerational    existentialist    judeo-christian    Gemini    dualist    wirepuller    monist    post-rational    anti-traditional    in-group