Irrefragable and Questionable

Opposite meaning words

Irrefragable adjective - Not capable of being challenged or proved wrong.

Usage example: the prosecutor painstakingly built an irrefragable case

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Questionable adjective - Open to question or dispute.

Usage example: whether it will rain today or not is questionable

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Irrefragable is an antonym for questionable.

Cite this Source

Questionable and Irrefragable. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/irrefragable/questionable

Irrefragable & Questionable. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/irrefragable/questionable>.

Questionable or Irrefragable. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/irrefragable/questionable.

Google Ngram Viewer shows how "irrefragable" and "questionable" have occurred on timeline