221 entries under noun topic. ×

2
imputation
2
interest
2
matter(issue, subject, problem, puzzle)
2
pass(criticize, call, request, offer)
2
plunge(verb, set, play, speculate)
2
puzzle(difficulty, issue, question, subject)
2
recalcitrancy
2
request(verb, take, order, go)
2
risk(verb, take, set, advance)
2
stake(verb, set, advance, try)
2
stump(verb, order, disregard, command)
2
stumper(question, puzzle, mystery, riddle)
2
summons to contest(expression, idiom, dispute, question)
2
tournament(match, opposition, game, contest)
2
urge(verb, support, order, force)
1
abnegation
1
abrogation
1
adversary
1
antipathy
1
appeal(verb, order, force, press)
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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>