Oppugn
Oppugn verb - To demand proof of the truth or rightness of.
Questioning is a synonym for oppugn. In some cases you can replace term "Questioning" with "Oppugn", this verbs are similar.
Questioning
Questioning adjective - Inclined to doubt or question claims.
Cite this Source
Questioning and Oppugn. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/oppugn/questioning
Oppugn & Questioning. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/oppugn/questioning>.
Questioning or Oppugn. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/oppugn/questioning.
Google Ngram Viewer shows how "oppugn" and "questioning" have occurred on timeline