Reasonable and Unknowable

Opposite meaning words

Reasonable adjective - According to the rules of logic.

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Unknowable is an antonym for reasonable.

Unknowable adjective - Not knowable.

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Reasonable is an antonym for unknowable in topics: belief, mind-boggling.

Nearby Words: unknown, unknowing

Cite this Source

Unknowable and Reasonable. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/reasonable/unknowable

Reasonable & Unknowable. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/reasonable/unknowable>.

Unknowable or Reasonable. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/reasonable/unknowable.

Google Ngram Viewer shows how "reasonable" and "unknowable" have occurred on timeline