94 entries under difficult topic. ×

20
thorny(adjective, hard, complex)
20
tricky(adjective, hard, complex)
19
drudgery(noun, adjective, hard, complex)
19
grave(adjective, hard, complex)
19
lumpish(adjective, hard, complex)
19
operose(adjective, hard, complex)
19
troubled(adjective, hard, sad, unhappy)
18
ambitious(adjective, hard, complex)
18
dire(adjective, hard, complex)
18
hard-nosed(adjective, hard, complex, severity)
18
impossible(adjective, hard, complex)
18
intricate(adjective, hard, complex, demanding)
17
sheer(adjective, hard, complex)
16
dictatorial(adjective, hard, tough, overwhelming)
12
demanding(adjective, dull, hard, tough, severe)
12
exacting(adjective, dull, hard, tough, severe)
12
troublesome(adjective, dull, hard, heavy)
11
strict(adjective, hard, tough, severe, rough)
10
rigorous(adjective, hard, tough, severe, rough)
9
cumbersome(adjective, pain, awkward, clumsy)
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APASmart Define. (2015). oppressive thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/oppressive/thesaurus/synonyms
ChicagoSmart Define. 2015. "oppressive thesaurus" https://smartdefine.org/oppressive/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, oppressive thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/oppressive/thesaurus/synonyms>.
MLASmart Define. "oppressive thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/oppressive/thesaurus/synonyms>