altruism

noun

al·​tru·​ism ˈal-trü-ˌi-zəm How to pronounce altruism (audio)
Synonyms of altruism
1
: unselfish regard for or devotion to the welfare of others
charitable acts motivated purely by altruism
The premise sounds straightforward: She's decided to give a kidney to a stranger as an act of altruism.Matthew Jacobs
2
: behavior by an animal that is not beneficial to or may be harmful to itself but that benefits others of its species
By helping a close blood relative, the altruistic organism ensures that at least some of its shared genetic material will be passed on. … The genes for altruism are passed on because they improve the … fitness of the group.Dave Roos

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Altruism Has Roots in Latin and French

Altruism refers to a quality possessed by people whose focus is on something other than themselves, and its root reveals the object of those generous tendencies. Altruism derives from the French word autrui, meaning "other people." Autrui, in turn, developed from the Old French term autre, which means "other" and which itself comes from Latin alter, also meaning "other." That Latin source eventually caused a curious thing to happen. Under the influence of alter, the French autrui gave rise to the altrui- of both the French altruisme and the English altruism. The English term has been in service since at least the mid-1800s.

Examples of altruism in a Sentence

A few skimpy corporate pensions were paid, but they were offered as much as departure incentives designed to promote business efficiency as expressions of altruism. W. Andrew Achenbaum, Wilson Quarterly, Spring 2006
Mary may have ample resources and prefer that her share pass to her children who have greater need and are in lower income tax brackets. (The progressive nature of our tax laws often fosters such altruism among family members.) William M. McGovern, Jr. et al., Wills, Trusts and Estates, 1988
And he still chokes up when he tells the story. Even at that young age, he understood that what his aunt was doing for him was the purest act of altruism. Gail Sheehy, New York Times Magazine, 20 Apr. 1986
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But people critical of the effective altruism movement have increasingly singled out the new organization in unsubtle ways. Max Tani, semafor.com, 8 Dec. 2025 Robin Hood replaces the character’s intrinsic altruism with a persistent adolescent selfishness. Roxana Hadadi, Vulture, 4 Dec. 2025 Perhaps most importantly, researchers need to rethink how altruism is understood. Stylianos Syropoulos, The Conversation, 2 Dec. 2025 What are some pop culture examples of altruism? Dana Taylor, USA Today, 13 Nov. 2025 See All Example Sentences for altruism

Word History

Etymology

French altruisme, from autrui other people, from Old French, oblique case form of autre other, from Latin alter

First Known Use

1853, in the meaning defined at sense 1

Time Traveler
The first known use of altruism was in 1853

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Cite this Entry

“Altruism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/altruism. Accessed 11 Dec. 2025.

Kids Definition

altruism

noun
al·​tru·​ism ˈal-tru̇-ˌiz-əm How to pronounce altruism (audio)
: unselfish interest in the welfare of others
altruist noun
altruistic adjective
altruistically adverb
Last Updated: - Updated example sentences
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