Affirm and Challenge

Affirm

Affirm verb - To state as a fact usually forcefully.
Usage example: unwilling to affirm without further study that the painting is an original Rembrandt

Challenge is an antonym for affirm.

Challenge

Challenge verb - To demand proof of the truth or rightness of.

Affirm is an antonym for challenge.

Common collocations

character affirm character challenge character
Cite this Source
Challenge and Affirm. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/affirm/challenge
Affirm & Challenge. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/affirm/challenge>.
Challenge or Affirm. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/affirm/challenge.
Google Ngram Viewer shows how "affirm" and "challenge" have occurred on timeline