Debatable and Unchallengeable
Opposite meaning words
Debatable
Debatable adjective - Open to question or dispute.
Usage example: it's always debatable which college football team is really number one, since there's more than one ranking system
Unchallengeable is an antonym for debatable.
Unchallengeable
Unchallengeable adjective - Not capable of being challenged or proved wrong.
Usage example: the contention that there are certain unchallengeable rules governing proper grammar
Debatable is an antonym for unchallengeable.
Nearby Word: unchallenged
Cite this Source
Unchallengeable and Debatable. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/debatable/unchallengeable
Debatable & Unchallengeable. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/debatable/unchallengeable>.
Unchallengeable or Debatable. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/debatable/unchallengeable.
Google Ngram Viewer shows how "debatable" and "unchallengeable" have occurred on timeline