72 entries under tough topic. ×

4
labored(adjective, hard, difficult, awkward)
3
uphill(adjective, hard, difficult, awkward)
2
demanding(adjective, hard, severe, difficult)
2
exacting(adjective, severe, difficult, harsh)
2
gargantuan(problematic, trying)
2
not easy(expression, idiom, problematic, trying)
2
rough(adjective, hard, difficult, awkward)
1
tiresome(severe, harsh, heavy, painful)
1
titanic(problematic, trying)
1
wearisome(adjective, hard, difficult, awkward)
1
formidable(adjective, hard, severe, difficult)
1
rigorous(adjective, hard, severe, difficult)
1
stiff(adjective, demanding, problematic, trying)
1
testing(adjective, difficult, awkward, grim)
1
unaccommodating(problematic, trying)
1
unamenable(problematic, trying)
1
unmanageable socially(expression, problematic, trying)
1
unyielding(problematic, trying)
1
upstream(problematic, trying)
0
ambitious(problematic, trying)
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APASmart Define. (2015). grueling thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/grueling/thesaurus/synonyms
ChicagoSmart Define. 2015. "grueling thesaurus" https://smartdefine.org/grueling/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, grueling thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/grueling/thesaurus/synonyms>.
MLASmart Define. "grueling thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/grueling/thesaurus/synonyms>