Challenging and Rigid

Challenging

Challenging adjective - Requiring much time, effort, or careful attention.
Usage example: a challenging test designed to whittle down the number of contestants

Rigid and challenging are semantically related. In some cases you can use "Rigid" instead an adjective "Challenging".

Nearby Words: challenge, challenged, challenger

Rigid

Rigid adjective - Not allowing for any exceptions or loosening of standards.

Challenging and rigid are semantically related. Sometimes you can use "Challenging" instead an adjective "Rigid".

Nearby Words: rigor, rigidity, rigidly
Cite this Source
Rigid and Challenging. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/challenging/rigid
Challenging & Rigid. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/challenging/rigid>.
Rigid or Challenging. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/challenging/rigid.
Google Ngram Viewer shows how "challenging" and "rigid" have occurred on timeline