>al·tru·is·tic [al-troo-is-tik] Pronunciation Key – Show IPA Pronunciation
1. unselfishly concerned for or devoted to the welfare of others (opposed to egoistic).
2. Animal Behavior. of or pertaining to behavior by an animal that may be to its disadvantage but that benefits others of its kind, often its close relatives.
[Origin: 1850–55; altru(ism) + -istic]

—Related forms
al·tru·is·ti·cal·ly, adverb

—Synonyms 1. charitable, generous, philanthropic; benevolent, unselfish.
—Antonyms 1. self-centered, selfish, mean.

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