cofounder

American  

[koh-foun-der] / koʊˈfaʊn dər /

Or co-founder

noun

1. a person who founds or establishes something with another.

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Etymology

Origin of cofounder

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

Example Sentences

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

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 sale, run by RR Auction, includes some of Apple’s early items and childhood belongings of Jobs, Apple’s cofounder and chief executive, who died in 2011 at 56, after battling pancreatic cancer.

From Los Angeles Times • Jan. 13, 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