Doubtful and Irrefutable
Opposite meaning words
Doubtful
Doubtful adjective - Open to question or dispute.
Usage example: a doubtful claim to the property
Irrefutable is an antonym for doubtful.
Irrefutable
Irrefutable adjective - Not capable of being challenged or proved wrong.
Usage example: the irrefutable reply of “Because I like it!”
Nearby Words: irrefutably, irrefutability
Cite this Source
Irrefutable and Doubtful. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/doubtful/irrefutable
Doubtful & Irrefutable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/doubtful/irrefutable>.
Irrefutable or Doubtful. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/doubtful/irrefutable.
Google Ngram Viewer shows how "doubtful" and "irrefutable" have occurred on timeline