260 entries under adjective topic. ×

1
competing(verb, rival, opposing)
1
counteractive
1
courageous
1
daredevil
1
dashing
1
difficile(tough, severe, difficult, awkward)
1
disobedient(unwilling, opposed, rebellious)
1
distressing(difficult, awkward, demanding, grueling)
1
disturbing(difficult, offensive, demanding, stimulating)
1
factious
1
farsighted(advance, view, success, perhaps)
1
fatiguing(difficult, awkward, demanding, grueling)
1
fearless
1
flourishing(advance, view, success, perhaps)
1
forward-looking(advance, view, success, perhaps)
1
future-oriented(advance, view, success, perhaps)
1
future-proof(advance, view, success, perhaps)
1
gallant
1
galling(tough, severe, offensive, painful)
1
game
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APASmart Define. (2016). challenging thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/challenging/thesaurus/synonyms
ChicagoSmart Define. 2016. "challenging thesaurus" https://smartdefine.org/challenging/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, challenging thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/challenging/thesaurus/synonyms>.
MLASmart Define. "challenging thesaurus" 2 March 2016. Web. 23 September 2026. <https://smartdefine.org/challenging/thesaurus/synonyms>