Challenging
Challenging adjective - Requiring considerable physical or mental effort.
Impertinent and challenging are semantically related. In some cases you can use "Impertinent" instead an adjective "Challenging".
Impertinent
Impertinent adjective - Displaying or marked by rude boldness.
Challenging and impertinent are semantically related. Sometimes you can use "Challenging" instead an adjective "Impertinent".
Nearby Word: impertinence
Mutual synonyms
Cite this Source
Impertinent and Challenging. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/challenging/impertinent
Challenging & Impertinent. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/challenging/impertinent>.
Impertinent or Challenging. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/challenging/impertinent.
Google Ngram Viewer shows how "challenging" and "impertinent" have occurred on timeline