8
resist(verb, support, take, meet, attack)
7
call(noun, verb, stop, take, order)
7
contradiction(noun, opposition, disputation, counteraction, confutation)
7
counteract(verb, oppose, ignore, deny, reverse)
7
problem(noun, difficulty, issue, question, subject)
7
quiz(verb, examine, demand, request, doubt)
7
rebuff(noun, verb, oppose, opposition)
7
reject(verb, criticize, doubt, question, discourage)
7
rival(verb, oppose, play, fight, match)
6
denounce(verb, charge, oppose, fight, dispute)
6
ultimatum(noun, dispute, demand, question, test)
6
arouse(verb, support, charge, disturb, touch)
6
demanding(noun, adjective, dispute, question, test)
6
exception(noun, support, act, dislike, doubt)
6
negate(verb, oppose, criticize, dispute, deny)
6
object to(verb, expression, phrasal verb, oppose, fight)
6
rebel(verb, ignore, resist, confront, defy)
6
rebut(verb, oppose, deny, doubt, question)
6
remonstration(noun, support, act, issue, dislike)
6
stand up to(verb, expression, idiom, phrasal verb, meet)
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APASmart Define. (2016). challenge thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/challenge/thesaurus/synonyms
ChicagoSmart Define. 2016. "challenge thesaurus" https://smartdefine.org/challenge/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, challenge thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/challenge/thesaurus/synonyms>.
MLASmart Define. "challenge thesaurus" 1 April 2016. Web. 22 September 2026. <https://smartdefine.org/challenge/thesaurus/synonyms>