self-interest
Americannoun
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regard for one's own interest or advantage, especially with disregard for others.
He appears to be motivated solely by self-interest, greed, and an insatiable hunger for self-aggrandizement.
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personal interest or advantage.
It is particularly hard to understand why a group would vote against its own self-interest.
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Economics. the doctrine that acting to one’s own benefit or advantage can also result in a benefit for society at large.
Adam Smith believed that individuals pursuing rational self-interest would create wealth through efficient production and competition.
noun
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one's personal interest or advantage
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the act or an instance of pursuing one's own interest
Other Word Forms
Etymology
Origin of self-interest
First recorded in 1640–50
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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.
Impacted companies also do much of the investigative legwork, out of necessity and self-interest.
From Slate ● Jul. 22, 2026
Each is designed so that firms—high cost or low, safe or risky—find it in their self-interest to choose the option meant for them.
From The Wall Street Journal ● Mar. 20, 2026
Nations that believe they can outcompete anyone, anywhere embrace open markets as a matter of rational self-interest.
From Barron's ● Mar. 20, 2026
Mandy Hill, president of the Publishers Association, said the backtrack was a victory "over the self-interest of a handful of large corporations".
From BBC ● Mar. 18, 2026
But Madison the slaveholder was ruled by fear and self-interest.
From "In the Shadow of Liberty" by Kenneth C. Davis
Definitions 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.
