54 entries under problematical topic. ×

3
bothersome(adjective, tough, severe, difficult, awkward)
3
challenging(adjective, great, tough, severe, difficult)
2
difficile(adjective, tough, severe, rough, difficult)
2
hairy(adjective, hard, severe, rough, difficult)
2
mean(adjective, hard, severe, rough, difficult)
2
slavish(adjective, tough, rough, difficult, heavy)
2
terrible(adjective, hard, tough, severe, rough)
2
testing(adjective, tough, severe, difficult, violent)
2
unsparing(adjective, tough, rough, difficult, heavy)
1
distressing(adjective, hard, severe, rough, difficult)
1
merciless(adjective, tough, severe, rough, difficult)
1
murder(adjective, hard, great, tough, severe)
0
scabrous(adjective, tough, rough, difficult, heavy)
0
uphill battle(expression, adjective, tough, rough, difficult)
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APASmart Define. (2016). laborious thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/laborious/thesaurus/synonyms
ChicagoSmart Define. 2016. "laborious thesaurus" https://smartdefine.org/laborious/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, laborious thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/laborious/thesaurus/synonyms>.
MLASmart Define. "laborious thesaurus" 26 February 2016. Web. 25 September 2026. <https://smartdefine.org/laborious/thesaurus/synonyms>