altruism

noun

al·​tru·​ism ˈal-trü-ˌi-zəm 

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

Did you know?

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

Squid Game is an elimination game, but there are these moments of deep altruism and kindness even amongst it. —Sydney Bucksbaum, Entertainment Weekly, 11 Nov. 2025

This isn’t just about altruism, though. —Maureen O'Hare, CNN Money, 21 Oct. 2025

Is there a way forward for the 98% of Gen Zers who put self-care, authenticity, and altruism above company success and career propulsion? —Suzy Welch, CNBC, 14 Oct. 2025

When the cost of food stretches paychecks past the breaking point, crowdfunding morphs from altruism to a parallel safety net. —Ashley Lutz, Fortune, 13 Oct. 2025

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

Rhymes for altruism

• autism
• fascism
• racism
• sikhism
• statism
• sufism
• thomism
• tourism
• tropism
• abolitionism
• aldosteronism
• americanism

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Kids Definition

altruism

noun

al·​tru·​ism ˈal-tru̇-ˌiz-əm 

: unselfish interest in the welfare of others

altruist

-tru̇-əst 

noun

altruistic

ˌal-tru̇-ˈis-tik 

adjective

altruistically

-ˈis-ti-k(ə-)lē 

adverb