Synonyms|554Antonyms|82|Broader|1Narrower|5Related|175

260 entries under adjective topic. ×

4
crossing(verb, opposing, oppositional, defying)
4
dissenting(verb, defiant, disagreeing, defying)
4
exhausting(hard, tough, difficult, awkward)
4
interfering(verb, opposing, oppositional, counteracting)
4
intriguing
4
laborious(great, tough, severe, difficult)
4
rigorous(difficult, awkward, thorough, demanding)
4
significant(importance, valuable, main, notable)
4
stimulating(moving, inspiring, encouraging, motivating)
3
counterattacking(verb, opposing, oppositional)
3
hard(great, tough, difficult, awkward)
3
hindering(verb, opposing, oppositional)
3
impeding(verb, opposing, oppositional)
3
inhibiting(verb, opposing, oppositional)
3
inquiring(verb, questioning)
3
insolent
3
neutralizing(verb, counteractive, counteracting)
3
querying(verb, questioning)
3
rebellious(unwilling, opposed, defiant)
3
rebuffing(verb, opposing, oppositional)
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APASmart Define. (2016). challenging thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/challenging/thesaurus/synonyms
ChicagoSmart Define. 2016. "challenging thesaurus" https://smartdefine.org/challenging/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, challenging thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/challenging/thesaurus/synonyms>.
MLASmart Define. "challenging thesaurus" 2 March 2016. Web. 22 September 2026. <https://smartdefine.org/challenging/thesaurus/synonyms>