117 entries under hard topic. ×

44
stressful(adjective, difficult, complex)
36
difficult(adjective, dull, tough, severe)
33
tough(adjective, dull, rough, difficult)
31
burdensome(adjective, dull, tough, difficult)
30
arduous(adjective, dull, tough, severe)
26
taxing(adjective, tough, severe, rough)
26
oppressive(adjective, dull, tough, difficult)
26
painful(adjective, difficult, complex, painful)
25
severe(adjective, difficult, heavy, complex)
25
toilsome(adjective, difficult, complex, weary)
25
tricky(adjective, difficult, complex)
24
laborious(adjective, dull, tough, severe)
24
rough(adjective, difficult, heavy, complex)
24
thorny(adjective, difficulty, difficult, complex)
24
tight(adjective, difficult, complex, troublesome)
23
complicated(adjective, difficulty, difficult, complex)
23
knotty(adjective, difficulty, difficult, complex)
23
rugged(adjective, difficulty, difficult, complex)
23
sticky(adjective, difficult, complex)
22
weighty(adjective, difficult, heavy, 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>