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al·tru·ism

altruism

pronunciation:
ael tru ih zm
part of speech: noun
definition: unselfish concern for the well-being of others. (Cf. egoism.)
She was motivated by altruism to support several charities.
synonyms:
benevolence, self-sacrifice
antonyms:
egoism, egotism, self-seeking
similar words:
beneficence, charity, generosity, good will, goodness, kindliness, liberality, magnanimity, philanthropy