Challenge
Challenge noun - A feeling or declaration of disapproval or dissent.
Knotty question and challenge are semantically related. In some cases you can use "Knotty question" instead a noun "Challenge".
Knotty question
Challenge and knotty question are semantically related. Sometimes you can use "Challenge" instead a noun phrase "Knotty question".
Cite this Source
Knotty question and Challenge. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/challenge/knotty_question
Challenge & Knotty question. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/challenge/knotty_question>.
Knotty question or Challenge. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/challenge/knotty_question.
Google Ngram Viewer shows how "challenge" and "knotty question" have occurred on timeline