Illogical
Illogical adjective - Not using or following good reasoning.
Usage example: illogical people are likely to believe every sensational claim made on TV
Preposterous is a synonym for illogical in absurd topic. In some cases you can use "Preposterous" instead an adjective "Illogical", when it comes to topics like not making sense.
Nearby Word: illogicality
Preposterous
Preposterous adjective - Showing or marked by a lack of good sense or judgment.
Usage example: a preposterous suggestion to go swimming in this freezing weather
Illogical is a synonym for preposterous in absurd topic. You can use "Illogical" instead an adjective "Preposterous".
Mutual synonyms
Related pairs
- stupid and illogical
- stupid and preposterous
- incongruous and illogical
- incongruous and preposterous
- inconsistent and illogical
- inconsistent and preposterous
- foolish and illogical
- foolish and preposterous
- irrational and illogical
- irrational and preposterous
- crazy and illogical
- crazy and preposterous
- invalid and illogical
- invalid and preposterous
Both words in one sentence
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Poe's Law: Most of the positions stated and conclusions drawn in the tracts are so preposterous and illogical (not to mention un-Christian, at least to the majority of Christians) that it's hard to tell if Chick is being entirely serious.
Source: Comic Book / Chick Tracts
Cite this Source
Preposterous and Illogical. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/illogical/preposterous
Illogical & Preposterous. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/illogical/preposterous>.
Preposterous or Illogical. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/illogical/preposterous.
Google Ngram Viewer shows how "illogical" and "preposterous" have occurred on timeline