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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.

It’s a bit of an overstatement to say “the Pope came out as anti-A.I.” with last week’s encyclical—after all, Anthropic’s cofounder was there for the release.

From Slate • Jun. 5, 2026

"In five years' time, we hope to be able to have a wide range of ingredients" drawing on the company's fermentation platform, says Daryl Pek, a cofounder of Mottainai Food Tech.

From BBC • Jun. 4, 2026

Instead, she and her cofounder, Louisa Pierce, replaced the material with more durable hardwood flooring throughout the upper level.

From MarketWatch • Jun. 1, 2026

For one, even extremely capable, long-running agents can’t be held liable for their actions, said Box cofounder and CEO Aaron Levie, also speaking at the Summit.

From The Wall Street Journal • Mar. 27, 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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