67 entries under difficult topic. ×

22
serious(adjective, bad, hard, offensive)
22
toilsome(adjective, hard, complex)
21
grave(adjective, hard, complex)
21
heartrending(adjective, hard, complex)
21
rough(adjective, bad, hard, offensive)
21
sticky(adjective, hard, complex, embarrassing)
20
complex(adjective, hard)
20
knotty(adjective, hard, complex)
20
problematic(adjective, hard, complex)
20
stressful(adjective, hard, complex)
20
taxing(adjective, hard, complex)
19
backbreaking(adjective, hard, complex)
19
complicated(adjective, hard, complex)
19
hefty(adjective, hard, complex)
19
intricate(adjective, hard, complex)
19
involved(adjective, hard, complex)
19
profound(adjective, hard, complex)
18
ambitious(adjective, hard, complex)
18
impossible(adjective, hard, complex)
18
rugged(adjective, hard, tough, harsh)
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APASmart Define. (2015). painful thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/painful/thesaurus/synonyms
ChicagoSmart Define. 2015. "painful thesaurus" https://smartdefine.org/painful/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, painful thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/painful/thesaurus/synonyms>.
MLASmart Define. "painful thesaurus" 21 July 2015. Web. 25 September 2026. <https://smartdefine.org/painful/thesaurus/synonyms>