Avouch
Avouch verb - To declare (something) to be true or genuine.
Back
Back verb - To provide evidence or information for (as a claim or idea).
Usage example: the author needs to back her thesis with more facts
Cite this Source
Back and Avouch. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/avouch/back
Avouch & Back. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/avouch/back>.
Back or Avouch. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/avouch/back.
Google Ngram Viewer shows how "avouch" and "back" have occurred on timeline