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.
Trailing by three points with four seconds remaining, Aurich’s team pulled off a 44-yard Hail Mary, complete with a precisely designed lateral, to win 20-17 and remain undefeated.
From The Wall Street Journal ● Oct. 6, 2026
And the team, which has a 1-2 record, needs answers quickly heading into this weekend’s divisional clash against the undefeated Buffalo Bills.
From The Wall Street Journal ● Oct. 1, 2026
Despite all that, an undefeated run spanning four years has been extended further.
From BBC ● Sep. 26, 2026
The day Pribble was arrested, Tracy High’s undefeated Bulldogs varsity football team won their away game in a 56-0 rout of the Lathrop High School Spartans.
From Los Angeles Times ● Sep. 14, 2026
But it was still a new course record by a wide margin, and Tom Bolles remained undefeated on Lake Washington.
From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown
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.
