undoubted

American  

[uhn-dou-tid] / ʌnˈdaʊ tɪd /

adjective

1. not called in question; accepted as beyond doubt; undisputed.

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undoubted British  

/ ʌnˈdaʊtɪd /

adjective

1. beyond doubt; certain or indisputable

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Synonym Usage

See doubtless ( def. ).

Other Word Forms

• undoubtedly
  adverb

Etymology

Origin of undoubted

late Middle English word dating back to 1425–75; see origin at un- ¹, doubt, -ed ²

Explanation

Something that's undoubted is generally accepted as certain or true. If you make $100 in one afternoon at your lemonade stand, it's an undoubted success! You can use the adjective undoubted to describe things you have no doubt about, in much the same way you'd use undisputed. If everyone agrees that you're the best Monopoly player in the whole family, you're the game's undoubted champion. And when you have a pal who's always there for you, they're your undoubted friend — you don't have the slightest bit of doubt about their friendship.

Example Sentences

See Examples For:

undoubted

We have charted the best away wins so far - but that excludes some of England's most impressive results... including the undoubted number one.

From BBC ● Jul. 6, 2026

“It was a good book suggested to me by an actress of undoubted talent,” Martel shares, careful to avoid names.

From Los Angeles Times ● May 6, 2026

Adriano, when it comes to iconic video game stars, is the undoubted king.

From BBC ● May 5, 2026

Sabalenka heads into the new season as undoubted world number one, having collected a second US Open title while also winning events at Brisbane, Madrid and Miami.

From Barron's ● Dec. 31, 2025

This explanation was suggested by the undoubted fact that the earliest known empires and writing systems arose in the Tigris and Euphrates Valleys of the Fertile Crescent and in the Nile Valley of Egypt.

From "Guns, Germs, and Steel: The Fates of Human Societies" by Jared M. Diamond