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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.

"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

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

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

The sunken ship lay on the ocean floor for more than seventy-two years until, on August 19, 2017, a team headed by Microsoft cofounder Paul Allen discovered it lying some 18,000 feet beneath the sea.

From "Shipwrecked!" by Martin W. Sandler

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