19 entries under tough topic. ×

10
grueling(adjective, hard, severe, difficult)
4
labored(adjective, hard, severe, rough)
3
uphill(adjective, hard, severe, rough)
3
wearisome(adjective, hard, rough, difficult)
2
bothersome(adjective, rough, difficult, heavy)
2
formidable(adjective, hard, severe, rough)
2
irksome(adjective, hard, severe, rough)
2
rigorous(adjective, hard, severe, rough)
1
difficile(adjective, rough, difficult, heavy)
1
distressing(adjective, severe, rough, difficult)
1
merciless(adjective, severe, rough, difficult)
1
murder(adjective, hard, rough, difficult)
1
scabrous(adjective, rough, difficult, heavy)
1
slavish(adjective, rough, difficult, heavy)
1
terrible(adjective, rough, difficult, heavy)
1
unsparing(adjective, rough, difficult, heavy)
1
uphill battle(expression, adjective, rough, difficult)
1
wearing(adjective, hard, rough, difficult)
1
wearying(adjective, rough, difficult, heavy)
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APASmart Define. (2015). backbreaking thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/backbreaking/thesaurus/synonyms
ChicagoSmart Define. 2015. "backbreaking thesaurus" https://smartdefine.org/backbreaking/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, backbreaking thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/backbreaking/thesaurus/synonyms>.
MLASmart Define. "backbreaking thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/backbreaking/thesaurus/synonyms>