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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One Republican is running unopposed and will face the primary winner on November’s ballot. Maya Wilkins, Chicago Tribune, 26 Apr. 2026 Whoever eventually wins the primary will be on the midterm general election ballot against Republican Jonathan James Chavez, who is running unopposed for his party's nomination. Dan Raby, CBS News, 23 Apr. 2026 Additionally, there are three other open judicial seats in which a candidate to be a new judge is running unopposed. Teri Figueroa, San Diego Union-Tribune, 18 Apr. 2026 The former football player and nonprofit executive ran unopposed in 2022. Ishani Desai, Sacbee.com, 18 Apr. 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 29 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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