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
Illegitimate and fallacious are semantically related. In some cases you can use "Illegitimate" instead an adjective "Fallacious".
Illegitimate
Illegitimate adjective - Not using or following good reasoning.
Usage example: made several illegitimate inferences
Fallacious and illegitimate are semantically related. Sometimes you can use "Fallacious" instead an adjective "Illegitimate".
Nearby Words: illegitimacy, illegitimately
Mutual synonyms
Related pairs
- sham and fallacious
- sham and illegitimate
- counterfeit and fallacious
- counterfeit and illegitimate
- improper and fallacious
- improper and illegitimate
- wrong and fallacious
- wrong and illegitimate
- dishonest and fallacious
- dishonest and illegitimate
- false and fallacious
- false and illegitimate
- fraudulent and fallacious
- fraudulent and illegitimate
Cite this Source
Illegitimate and Fallacious. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/fallacious/illegitimate
Fallacious & Illegitimate. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/fallacious/illegitimate>.
Illegitimate or Fallacious. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/fallacious/illegitimate.
Google Ngram Viewer shows how "fallacious" and "illegitimate" have occurred on timeline