599 entries under adjective topic. ×

11
distressing(severe, rough, harsh, tender)
11
particular(harsh, rigid, meticulous, fussy)
11
puzzling(hard, fancy, obscure, strange)
11
rigorous(hard, severe, rough, harsh)
11
uncomfortable(rough, painful, sickness, ache)
11
unpleasant(hard, severe, evil, rough)
11
uphill(hard, great, tough, easy)
10
hairy(noun, hard, severe, rough)
10
intractable(tough, obstinate, stubborn, problematic)
9
baffling(hard, obscure, strange, uncertain)
9
contrary(support, tough, attitude, rude)
9
finical(demanding, scrupulous, particular, meticulous)
9
obstinate(hard, tough, stubborn, complicated)
9
stiff(hard, tough, severe, rough)
9
tiring(dull, tough, awkward, boring)
9
whiny(rude, unpleasant, negative, unfriendly)
8
deep(hard, severe, meaning, abstract)
8
mysterious(hard, obscure, strange, complex)
8
recondite(hard, fancy, obscure, strange)
8
refractory(tough, wild, awkward, obstinate)
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APASmart Define. (2016). difficult thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/difficult/thesaurus/synonyms
ChicagoSmart Define. 2016. "difficult thesaurus" https://smartdefine.org/difficult/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, difficult thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/difficult/thesaurus/synonyms>.
MLASmart Define. "difficult thesaurus" 24 March 2016. Web. 22 September 2026. <https://smartdefine.org/difficult/thesaurus/synonyms>