221 entries under noun topic. ×

5
trial(dispute, question, test, task)
4
charge(verb, support, order, force)
4
counteraction(opposition, counteraction)
4
counterattack(verb, charge, oppose, fire)
4
debate(verb, oppose, dispute, difficulty)
4
denial
4
difficulty(issue, dislike, doubt, question)
4
enigma(difficulty, issue, question, subject)
4
expostulation(support, act, dislike, doubt)
4
interrogation(dispute, question, test, trial)
4
kick(verb, phrasal verb, support, act)
4
obstinacy
4
poser(question, puzzle, mystery, riddle)
4
protestation(support, act, dislike, doubt)
4
rebuttal
4
recalcitrance(order, disregard, command, opposition)
4
revolt(verb, order, disregard, ignore)
4
squawk(verb, phrasal verb, support, act)
4
stand(verb, take, meet, oppose)
3
antagonism(opposition, competition, contention)
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APASmart Define. (2016). challenge thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/challenge/thesaurus/synonyms
ChicagoSmart Define. 2016. "challenge thesaurus" https://smartdefine.org/challenge/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, challenge thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/challenge/thesaurus/synonyms>.
MLASmart Define. "challenge thesaurus" 1 April 2016. Web. 28 September 2026. <https://smartdefine.org/challenge/thesaurus/synonyms>