279 entries under adjective topic. ×

6
troublesome(tough, severe, difficult, awkward)
6
zippy(strong, tough, energetic, powerful)
5
Herculean(strong, tough, severe, difficult)
5
back-breaking
5
enterprising(activity, strong, tough, smart)
5
enthusiastic(determined, active, vigorous, resolute)
5
indefatigable(strong, moving, difficult, energetic)
5
knotty(hard, severe, rough, difficult)
5
mettlesome(strong, tough, intense, energetic)
5
murderous
5
red-blooded(strong, tough, intense, energetic)
5
stiff(tough, severe, difficult, painful)
5
thorny(difficult, embarrassing)
5
tight
5
tricky(difficult, awkward, demanding, irritating)
4
punishing
4
complex
4
fervent(difficult, vigorous, stressful)
4
finicky(difficult, thorough, meticulous, painstaking)
4
fussy(difficult, thorough, meticulous, painstaking)
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APASmart Define. (2016). strenuous thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/strenuous/thesaurus/synonyms
ChicagoSmart Define. 2016. "strenuous thesaurus" https://smartdefine.org/strenuous/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, strenuous thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/strenuous/thesaurus/synonyms>.
MLASmart Define. "strenuous thesaurus" 1 April 2016. Web. 25 September 2026. <https://smartdefine.org/strenuous/thesaurus/synonyms>