unopposed

adjective

un·​op·​posed ˌən-ə-ˈpōzd 

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

Representing Area 5 and Carmel Valley on the board, Koshy is a longtime school volunteer who was elected after running unopposed in the November 2024 election. —Karen Billing, San Diego Union-Tribune, 23 Apr. 2025

Jorge Santin and Orlando Lamas ran unopposed, winning the Group I and Group II seats. —Theo Karantsalis, Miami Herald, 16 Apr. 2025

Virginia Democrat Abigail Spanberger is currently unopposed, and though the state’s Republican Lt. Gov. Winsome Earle-Sears has a few GOP challengers, she is largely favored to win this summer. —Savannah Kuchar, USA Today, 30 Mar. 2025

The rapid advance by light units rather than heavy armor was relatively unopposed. —David Hambling, Forbes, 17 Mar. 2025

Word History

First Known Use

1625, in the meaning defined at sense 1

Rhymes for unopposed

• misdiagnosed
• overexposed
• superimposed
• undecomposed
• apposed
• bulldozed
• composed
• deposed
• disclosed
• disposed
• enclosed
• exposed

Medical Definition

unopposed

adjective

un·​op·​posed -ə-ˈpōzd 

: 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