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cofounder

American  
[koh-foun-der] / koʊˈfaʊn dər /
Or co-founder

noun

  1. 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.

CREW, which has 10 projects in the U.S. and Europe, just raised $25 million to build more systems and staff up, cofounder and CEO Joachim Katchinoff said.

From The Wall Street Journal • May 14, 2026

OpenAI, CEO Sam Altman and Microsoft are listed as defendants in former OpenAI cofounder Elon Musk’s lawsuit over OpenAI’s creation of a “capped profit” subsidiary in 2019.

From MarketWatch • Apr. 27, 2026

Designer Rob Janoff said that Apple cofounder Steve Jobs gave him one terse instruction when he commissioned a new logo in January 1977: "don't make it cute".

From Barron's • Mar. 29, 2026

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

Dan didn’t recognize Steve Wozniak, the cofounder of Apple Computer.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel

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