Dictionary.com
Thesaurus.com
unchallengeable
Derived word form of challenge

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.

The term implies there’s unchallengeable proof for a claim when there isn’t.

From The Wall Street Journal • Mar. 27, 2026

Elkan Abrahamson, a lawyer for the Hillsborough Law Now campaign, said this would leave them "unchallengeable".

From BBC • Jan. 18, 2026

This was rooted in a calculation that America’s greatest source of strength was global perceptions of the country as unchallengeable.

From New York Times • Mar. 18, 2023

“A system that allows for the outright and unchallengeable overruling of a Chief’s disciplinary decisions detracts from the Department’s appropriate efforts in furtherance of internal accountability,” the report said.

From Los Angeles Times • Nov. 24, 2022

It was hard to say what had changed—the manner was still quietly remote, the orders unchallengeable.

From "Atonement" by Ian McEwan