32 entries under irrational topic. ×

11
sophistical(adjective, mad, unreasonable, trifling)
10
specious(adjective, correct, foolish, true, unreasonable)
8
invalid(adjective, correct, foolish, true, unreasonable)
8
misleading(adjective, mad, unreasonable, fallacious)
7
deceptive(adjective, mad, unreasonable, fallacious)
7
illogical(adjective, correct, foolish, sense, true)
7
unsound(adjective, correct, foolish, true, unreasonable)
5
mad(adjective, foolish, unreasonable, worthless)
5
unreasonable(adjective, foolish, mad, worthless)
4
groundless(adjective, foolish, unreasonable, illogical)
4
reasonless(adjective, foolish, mad, unreasonable)
3
fraudulent(adjective, mad, unreasonable, fallacious)
3
unfounded(adjective, foolish, unreasonable, illogical)
2
delusive(adjective, mad, unreasonable, fallacious)
2
erroneous(adjective, mad, unreasonable, fallacious)
2
fictitious(adjective, mad, unreasonable, fallacious)
2
fishy(adjective, mad, unreasonable, fallacious)
2
illusory(adjective, mad, unreasonable, fallacious)
2
phony(adjective, informal, mad, unreasonable)
2
unreal(adjective, mad, unreasonable, fallacious)
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APASmart Define. (2015). sophistic thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sophistic/thesaurus/synonyms
ChicagoSmart Define. 2015. "sophistic thesaurus" https://smartdefine.org/sophistic/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, sophistic thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sophistic/thesaurus/synonyms>.
MLASmart Define. "sophistic thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/sophistic/thesaurus/synonyms>