103 entries under tough topic. ×

2
irritating(adjective, dull, severe, boring)
2
merciless(adjective, severe, rough, difficult)
2
no picnic(expression, hard, severe, rough)
2
not easy(expression, severe, painful, problematic)
2
operose(adjective, severe, rough, difficult)
2
refractory(adjective, persistent, obstinate, problematic)
2
stiff(adjective, hard, severe, rough)
2
testing(adjective, severe, difficult, violent)
2
tiresome(adjective, hard, severe, harsh)
2
titanic(severe, painful, problematic, trying)
1
annoying(adjective, dull, boring, persistent)
1
backbreaker(adjective, hard, severe, difficult)
1
crucial(severe, important, serious, painful)
1
easier said than done(expression, severe, painful, problematic)
1
galling(severe, harsh, heavy, painful)
1
gargantuan(severe, painful, problematic, trying)
1
hard-won(severe, painful, problematic, trying)
1
immense(severe, painful, problematic, trying)
1
labored(adjective, hard, severe, difficult)
1
murder(adjective, hard, severe, rough)
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APASmart Define. (2015). demanding thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/demanding/thesaurus/synonyms
ChicagoSmart Define. 2015. "demanding thesaurus" https://smartdefine.org/demanding/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, demanding thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/demanding/thesaurus/synonyms>.
MLASmart Define. "demanding thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/demanding/thesaurus/synonyms>