70 entries under tough topic. ×

2
Herculean(adjective, severe, difficult, awkward)
2
challenging(adjective, severe, difficult, awkward)
2
finicky(adjective, difficult, harsh, rigid)
2
fussy(adjective, difficult, harsh, rigid)
2
grim(problematic, trying)
2
labored(adjective, hard, severe, rough)
2
rigid(adjective, correct, severe, harsh)
2
stiff(adjective, severe, difficult, painful)
2
titanic(severe, painful, problematic, trying)
2
unsparing(adjective, rough, difficult, harsh)
1
backbreaker(severe, painful, problematic, trying)
1
crucial(severe, big, heavy, substantial)
1
difficile(adjective, severe, rough, difficult)
1
easier said than done(expression, severe, painful, problematic)
1
galling(severe, harsh, heavy, painful)
1
gargantuan(severe, painful, problematic, trying)
1
hairy(adjective, hard, severe, rough)
1
hard-won(severe, painful, problematic, trying)
1
immense(severe, painful, problematic, trying)
1
merciless(adjective, severe, rough, difficult)
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APASmart Define. (2015). burdensome thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/burdensome/thesaurus/synonyms
ChicagoSmart Define. 2015. "burdensome thesaurus" https://smartdefine.org/burdensome/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, burdensome thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/burdensome/thesaurus/synonyms>.
MLASmart Define. "burdensome thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/burdensome/thesaurus/synonyms>