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cofounder

American

[koh-foun-der] / koʊˈfaʊn dər /

Or co-founder

noun

a person who founds or establishes something with another.

Etymology

Origin of cofounder

First recorded in 1595–1605; co- + founder ¹

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.

Why Palantir cofounder and CEO Alex Karp views working with Western militaries not just as a business opportunity, but as a higher calling.

From Slate • Mar. 22, 2026

The technology can reduce costs for utilities that typically rely on workers to inspect vast numbers of assets, while also improving safety, said Jack Curtis, a cofounder and the company’s chief commercial officer.

From The Wall Street Journal • Feb. 9, 2026

Brad Arnold, the 47-year-old cofounder and lead singer of the Mississippi rock band 3 Doors Down, died Saturday, nine months after revealing a diagnosis of kidney cancer.

From Los Angeles Times • Feb. 7, 2026

But Tesla is a tech stock, Future Fund cofounder Gary Black pointed out to Barron’s on Wednesday.

From Barron's • Feb. 4, 2026

The cofounder, Sasha Chanoff, has been a vocal advocate for the Banyamulenge.

From "How Dare the Sun Rise" by Sandra Uwiringiyimana

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023