altruistic
Americanadjective
-
unselfishly concerned for or devoted to the welfare of others (opposed to egoistic).
- Synonyms:
- unselfish, benevolent, philanthropic, generous, charitable
- Antonyms:
- mean, selfish, self-centered
-
Animal Behavior. of or relating to behavior by an animal that may be to its disadvantage but that benefits others of its kind, often its close relatives.
Other Word Forms
Etymology
Origin of altruistic
First recorded in 1850–55; altru(ism) + -istic
Explanation
Someone who is altruistic always puts others first. An altruistic firefighter risks his life to save another's life, while an altruistic mom gives up the last bite of pie so her kid will be happy. This word comes from the Old French altruistic and means "other people" and before that the Latin alter, which means "other." Our current word comes from the nineteenth century and comes from philosophy. It means that it's important for people to be concerned with the good of others and to act unselfishly. When the word refers to the animal world, it means behavior that may actually harm the individual animal but will benefit the species in general. This is a truly selfless act!
Vocabulary lists containing altruistic
100 SAT Words Beginning with "A"
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Into the Wild
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'Tis The Season: Words For Giving
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Once activated, they created a kind of wormhole in the pyramid through which altruistic aliens from the star cluster Pleiades would emerge.
From Slate ● Sep. 22, 2026
The effective altruists spent hours debating how to be most effectively altruistic.
From The Wall Street Journal ● Aug. 26, 2026
Family and friends remember Krug as many things: a reliable laugh, a saint of a father, a hell of a second baseman, a competitive but altruistic coach.
From Los Angeles Times ● Jun. 26, 2026
And it makes me wonder just how altruistic that offer actually is.
From MarketWatch ● Jun. 22, 2026
She tried to focus on how much she was helping them, as if this were a charitable deed, purely altruistic: like volunteering at a soup kitchen, or adopting a dog from a shelter.
From "Little Fires Everywhere" by Celeste Ng
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Get a wordDefinitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
