4
war(verb, meet, attack, fight, struggle)
4
cartel(order, disregard, command, opposition, resistance)
4
charge(noun, verb, support, order, force)
4
compete(verb, oppose, fight, match, face)
4
compete with(verb, expression, oppose, follow, match)
4
contend with(verb, expression, match, contend, imitate)
4
counteraction(noun, opposition, counteraction)
4
counterattack(noun, verb, charge, oppose, fire)
4
debate(noun, verb, oppose, dispute, difficulty)
4
denial(noun, confutation)
4
difficulty(noun, issue, dislike, doubt, question)
4
distrust(verb, oppose, dispute, doubt, question)
4
enigma(noun, difficulty, issue, question, subject)
4
examine(verb, demand, request, doubt, question)
4
expostulate(verb, support, oppose, fight, express)
4
expostulation(noun, support, act, dislike, doubt)
4
face down(verb, expression, phrasal verb, meet, oppose)
4
interrogate(verb, order, force, press, examine)
4
interrogation(noun, dispute, question, test, trial)
4
kick(noun, verb, phrasal verb, support, act)
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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>