undefeated
Britishadjective
Explanation
Has your volleyball team won every single game this season? Then it's undefeated — it hasn't been beaten yet! You'll almost always find this adjective describing sports teams or players who haven't suffered a loss, like the undefeated tennis player who's won all of her matches or the basketball team that's been undefeated for four games. Undefeated adds the prefix un-, or "not," to defeated, "beaten," which we can trace back to the Vulgar Latin diffacere, "destroy."
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.
Appeared in the October 2, 2025, print edition as 'Vanderbilt Football Is Undefeated.
From The Wall Street Journal • Oct. 1, 2025
Undefeated provided merchandise for the workshop, including a hoodie that many attendees wore throughout the weekend.
From Los Angeles Times • Jul. 30, 2025
Undefeated boxer Rhys Edwards, who fights on the undercard: I think Lauren will do it.
From BBC • May 11, 2024
His list of innovations includes launching ESPN’s biweekly magazine in 1997, winning the broadcast rights to Monday Night Football in 2005, and spearheading the creation of Grantland and the Undefeated, among many other awe-inspiring achievements.
From Slate • Dec. 3, 2023
Undefeated, Derues only determined to fly the higher.
From A Book of Remarkable Criminals by Irving, Henry Brodribb
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
