Challenge
Challenge verb - To demand proof of the truth or rightness of.
Not ratify and challenge are semantically related. In some cases you can use "Not ratify" instead a verb "Challenge".
Not ratify
Challenge and not ratify are semantically related. You can use "Challenge" instead a verb phrase "Not ratify".
Cite this Source
Not ratify and Challenge. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/challenge/not_ratify
Challenge & Not ratify. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/challenge/not_ratify>.
Not ratify or Challenge. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/challenge/not_ratify.
Google Ngram Viewer shows how "challenge" and "not ratify" have occurred on timeline