Fallacious
Fallacious adjective - Not using or following good reasoning.
Flawed is a synonym for fallacious in erroneous topic. In some cases you can use "Flawed" instead an adjective "Fallacious".
Mutual synonyms
Related pairs
Cite this Source
Flawed and Fallacious. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/fallacious/flawed
Fallacious & Flawed. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/fallacious/flawed>.
Flawed or Fallacious. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/fallacious/flawed.
Google Ngram Viewer shows how "fallacious" and "flawed" have occurred on timeline