Nonvalid and Unreasonable

Nonvalid

Nonvalid adjective - Having no basis in reason or fact.
Usage example: a nonvalid theory that most scientists rejected long ago

Unreasonable and nonvalid are semantically related. In some cases you can use "Unreasonable" instead an adjective "Nonvalid".

Unreasonable

Unreasonable adjective - Having no basis in reason or fact.
Usage example: an unreasonable assumption

Nonvalid and unreasonable are semantically related. You can use "Nonvalid" instead an adjective "Unreasonable".

Cite this Source
Unreasonable and Nonvalid. (2017). Retrieved 2026, August 15, from https://thesaurus.plus/related/nonvalid/unreasonable
Nonvalid & Unreasonable. N.p., 2017. Web. 15 Aug. 2026. <https://thesaurus.plus/related/nonvalid/unreasonable>.
Unreasonable or Nonvalid. 2017. Accessed August 15, 2026. https://thesaurus.plus/related/nonvalid/unreasonable.
Google Ngram Viewer shows how "nonvalid" and "unreasonable" have occurred on timeline