68 entries under problematic topic. ×

4
difficult(adjective, hard, tough, rough, heavy)
3
demanding(adjective, tough, severe, rough, difficult)
2
arduous(adjective, tough, severe, rough, difficult)
2
exacting(adjective, tough, severe, rough, difficult)
2
formidable(adjective, tough, severe, rough, difficult)
2
intricate(adjective, tough, severe, rough, difficult)
2
laborious(adjective, tough, severe, rough, difficult)
2
not easy(expression, adjective, tough, severe, painful)
2
operose(adjective, tough, severe, rough, difficult)
2
severe(adjective, tough, rough, difficult, heavy)
2
titanic(adjective, tough, severe, painful)
2
toilsome(adjective, tough, severe, rough, difficult)
2
tough(adjective, severe, rough, difficult, painful)
2
uphill(adjective, tough, severe, rough, difficult)
1
ambitious(adjective, tough, severe, painful)
1
backbreaker(adjective, tough, severe, painful)
1
bothersome(adjective, tough, severe, rough, difficult)
1
burdensome(adjective, tough, severe, rough, difficult)
1
challenging(adjective, tough, severe, difficult, awkward)
1
crucial(adjective, tough, severe, painful)
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APASmart Define. (2015). difficile thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/difficile/thesaurus/synonyms
ChicagoSmart Define. 2015. "difficile thesaurus" https://smartdefine.org/difficile/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, difficile thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/difficile/thesaurus/synonyms>.
MLASmart Define. "difficile thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/difficile/thesaurus/synonyms>