unchallenged

adjective

un·​chal·​lenged ˌən-ˈcha-lənjd 

: not questioned, disputed, or opposed : not challenged

an unchallenged assumption

unchallenged authority

… modes of thinking that have gone unchallenged since the time of Newton, Descartes, and even Aristotle.

—James Bailey

Examples of unchallenged in a Sentence

Recent Examples on the Web

The jury convicted Snyder on the IRS charge, which involved his personal business and not his duties as mayor at the time, and that conviction had remained unchallenged. — Alexandra Kukulka, Chicago Tribune, 5 Aug. 2026

Dazed but also smiling, the remnant no doubt of a megalomania that ran unchallenged for too long. — Literary Hub, 3 Aug. 2026

For decades, the political calendar was unchanged and, mostly, unchallenged. — Los Angeles Times, 2 Aug. 2026

The Republicans’ most aggressive allegations went unchallenged in the room. — Daniel Engber, The Atlantic, 29 July 2026

Word History

First Known Use

circa 1639, in the meaning defined above