83 entries under problematic topic. ×

16
delicate(adjective, hard, awkward, uneasy, tricky)
16
exacting(adjective, dull, hard, tough, severe)
14
fastidious(adjective, tough, careful, scrupulous, particular)
14
heavy(adjective, dull, hard, tough, severe)
13
perplexing(adjective, hard, fancy, obscure, delicate)
11
distressing(adjective, severe, rough, harsh, tender)
11
unpleasant(adjective, hard, severe, evil, rough)
11
uphill(adjective, hard, great, tough, easy)
10
intractable(adjective, tough, obstinate, stubborn)
9
stiff(adjective, hard, tough, severe, rough)
9
tiring(adjective, dull, tough, awkward, boring)
8
refractory(adjective, tough, wild, awkward, obstinate)
7
effortful(adjective, hard, great, tough, rough)
7
challenging(adjective, hard, great, tough, obscure)
7
dangerous(noun, adjective, hard, tough, severe)
7
problem(noun, adjective, hard, tough, grim)
7
unyielding(adjective, hard, tough, severe, wild)
7
wearisome(adjective, dull, hard, tough, rough)
6
grim(adjective, tough, severe, harsh, unhappy)
6
irritating(adjective, dull, hard, tough, rough)
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APASmart Define. (2016). difficult thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/difficult/thesaurus/synonyms
ChicagoSmart Define. 2016. "difficult thesaurus" https://smartdefine.org/difficult/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, difficult thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/difficult/thesaurus/synonyms>.
MLASmart Define. "difficult thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/difficult/thesaurus/synonyms>