Informed and Nonvalid

Informed

Informed adjective - Based on sound reasoning or information.
Usage example: the expert's informed opinion persuaded many fence-sitters to get a flu shot

Nonvalid is an antonym for informed.

Nonvalid

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

Informed is an antonym for nonvalid.
Cite this Source
Nonvalid and Informed. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/informed/nonvalid
Informed & Nonvalid. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/informed/nonvalid>.
Nonvalid or Informed. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/informed/nonvalid.
Google Ngram Viewer shows how "informed" and "nonvalid" have occurred on timeline