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.
Kotaskova, who was previously undefeated, wore the damage of Cameron's relentless work by the end of the fifth round, with blood coming from her nose and markings under her eyes.
From BBC • Apr. 5, 2026
As an early 2000s champ in the sport, Mullin boasted an undefeated 5-0 record and the Oklahoma chapter of the National Wrestling Hall of Fame inducted him in 2016.
From Los Angeles Times • Mar. 26, 2026
In the co-main event, Liverpool's Luke Riley remained undefeated as he beat Michael Aswell Jr by unanimous decision for the 13th win of his career.
From BBC • Mar. 21, 2026
Throughout their undefeated Big Ten season, the Bruins’ freshmen have established themselves as a cornerstone of the team.
From Los Angeles Times • Mar. 21, 2026
I will die, in my own small way, undefeated.
From "The Hunger Games" by Suzanne Collins
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.
