53 entries under hard topic. ×

33
difficult(adjective, tough, delicate, complex)
30
tricky(adjective, open, difficult, delicate)
28
knotty(adjective, difficult, delicate, complex)
27
precarious(adjective, open, difficult, complex)
25
intricate(adjective, difficult, delicate, complex)
25
thorny(adjective, difficult, delicate, complex)
24
complicated(adjective, difficult, delicate, complex)
24
sensitive(adjective, difficult, delicate, uncertain)
22
tough(adjective, difficult, complex)
22
complex(adjective, difficult, delicate, awkward)
22
sticky(adjective, difficult, complex)
21
involved(adjective, difficult, delicate, complex)
21
tight(adjective, difficult, complex)
20
labyrinthine(adjective, difficult, complex, intricate)
20
byzantine(adjective, difficult, complex, intricate)
20
painful(adjective, difficult, complex)
20
rugged(adjective, difficult, delicate, uncertain)
20
trying(adjective, difficult, complex)
19
Gordian(adjective, difficult, complex, intricate)
19
ambitious(adjective, difficult, complex)
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APASmart Define. (2016). problematic thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/problematic/thesaurus/synonyms
ChicagoSmart Define. 2016. "problematic thesaurus" https://smartdefine.org/problematic/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, problematic thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/problematic/thesaurus/synonyms>.
MLASmart Define. "problematic thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/problematic/thesaurus/synonyms>