Irrefragable and Negotiable

Irrefragable

Irrefragable adjective - Not capable of being challenged or proved wrong.
Usage example: the prosecutor painstakingly built an irrefragable case

Negotiable is an antonym for irrefragable.

Negotiable

Negotiable adjective - Open to question or dispute.
Usage example: the final judgment is not negotiable

Irrefragable is an antonym for negotiable.

Cite this Source
Negotiable and Irrefragable. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/irrefragable/negotiable
Irrefragable & Negotiable. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/irrefragable/negotiable>.
Negotiable or Irrefragable. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/irrefragable/negotiable.
Google Ngram Viewer shows how "irrefragable" and "negotiable" have occurred on timeline