65 entries under tough topic. ×

33
difficult(adjective, hard, delicate, complex)
19
arduous(adjective, hard, difficult, complex)
7
controversial(adjective, uncertain, doubtful, unsettled)
5
perplexing(adjective, hard, fancy, rough)
5
ticklish(adjective, difficult, delicate, uncertain)
4
awkward(adjective, difficult, delicate, unpleasant)
4
troublesome(adjective, hard, fancy, severe)
3
dangerous(adjective, difficult, delicate, uncertain)
2
fractious(unpleasant, unfortunate, trying, annoying)
2
problem(adjective, severe, grim, painful)
2
titanic(severe, painful, trying)
1
backbreaker(severe, painful, trying)
1
bothersome(severe, painful, tricky, trying)
1
challenging(adjective, severe, painful, tricky)
1
crucial(severe, painful, trying)
1
demanding(severe, painful, trying, disorderly)
1
difficile(severe, painful, trying)
1
easier said than done(expression, idiom, severe, painful)
1
effortful(severe, difficult, awkward, painful)
1
exacting(severe, painful, trying)
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APASmart Define. (2016). problematic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/problematic/thesaurus/synonyms
ChicagoSmart Define. 2016. "problematic thesaurus" https://smartdefine.org/problematic/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, problematic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/problematic/thesaurus/synonyms>.
MLASmart Define. "problematic thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/problematic/thesaurus/synonyms>