Demonstrated and Fallacious
Opposite meaning words
Demonstrated
Demonstrated adjective - Having been demonstrated or verified beyond doubt.
Fallacious is an antonym for demonstrated.
Fallacious
Fallacious adjective - Not using or following good reasoning.
Usage example: it's fallacious to say that something must exist because science hasn't proven its nonexistence
Demonstrated is an antonym for fallacious.
Cite this Source
Fallacious and Demonstrated. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/demonstrated/fallacious
Demonstrated & Fallacious. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/demonstrated/fallacious>.
Fallacious or Demonstrated. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/demonstrated/fallacious.
Google Ngram Viewer shows how "demonstrated" and "fallacious" have occurred on timeline