Flawed
Fallacious
Fallacious adjective - Not using or following good reasoning.
Flawed is a synonym for fallacious in erroneous topic. You can use "Flawed" instead an adjective "Fallacious".
Mutual synonyms
Cite this Source
Fallacious and Flawed. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/flawed/fallacious
Flawed & Fallacious. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/flawed/fallacious>.
Fallacious or Flawed. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/flawed/fallacious.
Google Ngram Viewer shows how "flawed" and "fallacious" have occurred on timeline