Illogical and Undecayed

Opposite meaning words

Illogical adjective - Not using or following good reasoning.

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Undecayed is an antonym for illogical.

Nearby Word: illogicality

Definitions of Illogical not found.

Illogical is an antonym for undecayed in complete topic.

Cite this Source

Undecayed and Illogical. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/illogical/undecayed

Illogical & Undecayed. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/illogical/undecayed>.

Undecayed or Illogical. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/illogical/undecayed.

Google Ngram Viewer shows how "illogical" and "undecayed" have occurred on timeline