unopposed

adjective

un·​op·​posed ˌən-ə-ˈpōzd How to pronounce unopposed (audio)
1
: not opposed
an unopposed invasion
: having no opponent
a politician who is running for election unopposed
2
medical : being or relating to estrogen replacement therapy in which a progestin (such as medroxyprogesterone acetate) is not coadministered to reduce the potential risks (such as endometrial cancer) associated with estrogen used alone
A woman who has had her uterus removed can take the estrogen "unopposed"—that is, without the addition of progestin.Consumer Reports

Examples of unopposed in a Sentence

Recent Examples on the Web
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The District 1 and District 2 seats are contested, while Nick Brummel is running unopposed for the District 3 seat. Ilana Arougheti, Kansas City Star, 31 Mar. 2026 All four candidates were endorsed by the Lake Forest Caucus and ran unopposed. Daniel I. Dorfman, Chicago Tribune, 23 Mar. 2026 Patty Garcia, who is not related to the congressman, will face Republican Lupe Castillo, who also ran unopposed, in November. ABC News, 17 Mar. 2026 Preckwinkle is seeking a record-tying fifth term in office leading the country's second largest county, and will face Libertarian candidate Michael Murphy in the general election in November, after Murphy ran unopposed in his party's primary. Sabrina Franza, CBS News, 17 Mar. 2026 See All Example Sentences for unopposed

Word History

First Known Use

1625, in the meaning defined at sense 1

Time Traveler
The first known use of unopposed was in 1625

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Cite this Entry

“Unopposed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unopposed. Accessed 6 Apr. 2026.

Medical Definition

unopposed

adjective
un·​op·​posed -ə-ˈpōzd How to pronounce unopposed (audio)
: being or relating to estrogen replacement therapy in which a progestin (as medroxyprogesterone acetate) is not coadministered to reduce the potential risks (as endometrial cancer) associated with estrogen used alone
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