100 entries under difficult topic. ×

22
weighty(adjective, hard, heavy, complex)
21
complex(adjective, hard, tricky, problematic)
21
grievous(adjective, hard, complex, painful)
21
intricate(adjective, hard, difficulty, complex)
21
punishing(verb, adjective, hard, complex)
20
backbreaking(adjective, hard, heavy, complex)
20
cruel(adjective, hard, complex, painful)
20
grinding(adjective, hard, complex)
20
hefty(adjective, dull, hard, complex)
20
impossible(adjective, hard, difficulty, complex)
20
precarious(adjective, hard, complex)
20
problematic(adjective, hard, complex)
20
sore(adjective, hard, complex, painful)
19
ambitious(adjective, hard, complex)
19
disturbing(adjective, hard, complex)
19
knotted(adjective, hard, difficulty, complex)
19
labyrinthine(adjective, hard, difficulty, complex)
19
operose(adjective, hard, complex)
19
sensitive(adjective, hard, complex)
19
stubborn(adjective, hard, difficulty, complex)
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APASmart Define. (2016). trying thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/trying/thesaurus/synonyms
ChicagoSmart Define. 2016. "trying thesaurus" https://smartdefine.org/trying/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, trying thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/trying/thesaurus/synonyms>.
MLASmart Define. "trying thesaurus" 13 March 2016. Web. 22 September 2026. <https://smartdefine.org/trying/thesaurus/synonyms>