Fallacious
Fallacious adjective - Not using or following good reasoning.
Questionable and fallacious are semantically related. In some cases you can use "Questionable" instead an adjective "Fallacious".
Questionable
Questionable adjective - Giving good reason for being doubted, questioned, or challenged.
Fallacious and questionable are semantically related. Sometimes you can use "Fallacious" instead an adjective "Questionable".
Mutual synonyms
Related pairs
- ambiguous and fallacious
- ambiguous and questionable
- weak and fallacious
- weak and questionable
- flimsy and fallacious
- flimsy and questionable
- unconvincing and fallacious
- unconvincing and questionable
- unsound and fallacious
- unsound and questionable
- absurd and fallacious
- absurd and questionable
- untrustworthy and fallacious
- untrustworthy and questionable
Both words in one sentence
- T'Var calls the logic behind the test fallacious and notes that with their Willing Suspension of Disbelief broken by the computer's obvious cheating, the accuracy of the test is questionable.
Source: Unwinnable Training Simulation
Cite this Source
Questionable and Fallacious. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/fallacious/questionable
Fallacious & Questionable. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/fallacious/questionable>.
Questionable or Fallacious. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/fallacious/questionable.
Google Ngram Viewer shows how "fallacious" and "questionable" have occurred on timeline