Arguable and Unchallengeable
Opposite meaning words
Arguable
Arguable adjective - Open to question or dispute.
Usage example: frankly, it's arguable whether you deserve the promotion
Unchallengeable is an antonym for arguable.
Unchallengeable
Unchallengeable adjective - Not capable of being challenged or proved wrong.
Usage example: the contention that there are certain unchallengeable rules governing proper grammar
Arguable is an antonym for unchallengeable.
Nearby Word: unchallenged
Cite this Source
Unchallengeable and Arguable. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/arguable/unchallengeable
Arguable & Unchallengeable. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/arguable/unchallengeable>.
Unchallengeable or Arguable. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/arguable/unchallengeable.
Google Ngram Viewer shows how "arguable" and "unchallengeable" have occurred on timeline