62 entries under problematic topic. ×

35
laborious(adjective, work, hard, tough, severe)
28
arduous(adjective, hard, tough, severe, rough)
24
difficult(adjective, hard, tough, severe, rough)
24
toilsome(adjective, hard, tough, difficult, complex)
23
severe(adjective, hard, tough, difficult, violent)
23
tough(adjective, hard, severe, rough, difficult)
22
burdensome(adjective, hard, tough, difficult, complex)
8
grueling(adjective, hard, tough, difficult, awkward)
7
heavy(adjective, tough, severe, rough, difficult)
7
strenuous(adjective, hard, tough, severe, rough)
4
onerous(adjective, tough, severe, difficult, awkward)
4
troublesome(adjective, tough, severe, difficult, awkward)
4
wearisome(adjective, tough, severe, difficult, awkward)
3
effortful(adjective, tough, severe, difficult, awkward)
3
uphill(adjective, tough, severe, rough, difficult)
2
demanding(adjective, tough, severe, rough, difficult)
2
difficile(adjective, tough, severe, rough, difficult)
2
exacting(adjective, tough, severe, rough, difficult)
2
herculean(adjective, tough, severe, difficult, awkward)
2
labored(adjective, hard, tough, severe, difficult)
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APASmart Define. (2015). operose thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/operose/thesaurus/synonyms
ChicagoSmart Define. 2015. "operose thesaurus" https://smartdefine.org/operose/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, operose thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/operose/thesaurus/synonyms>.
MLASmart Define. "operose thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/operose/thesaurus/synonyms>