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

260 entries under adjective topic. ×

2
recalcitrant
2
resistant(unwilling, opposed, defiant)
2
rugged(difficult, awkward, demanding, grueling)
2
spunky
2
stimulant(offensive, stimulating, disturbing, provoking)
2
strenuous(great, tough, severe, difficult)
2
toilsome(great, tough, severe, difficult)
2
tough(great, severe, difficult, painful)
2
unyielding(tough, severe, painful, problematic)
1
advanced(advance, view, success, perhaps)
1
advantageous(advance, view, success, perhaps)
1
adventurous
1
aggravating(offensive, stimulating, disturbing, provoking)
1
aggressive(stimulating, provoking)
1
annoying(offensive, stimulating, disturbing, provoking)
1
antagonistic(unwilling, opposed)
1
available(advance, view, success, perhaps)
1
bauld
1
bothersome(hard, tough, severe, difficult)
1
budding(advance, view, success, perhaps)
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APASmart Define. (2016). challenging thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/challenging/thesaurus/synonyms
ChicagoSmart Define. 2016. "challenging thesaurus" https://smartdefine.org/challenging/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, challenging thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/challenging/thesaurus/synonyms>.
MLASmart Define. "challenging thesaurus" 2 March 2016. Web. 24 September 2026. <https://smartdefine.org/challenging/thesaurus/synonyms>