26 entries under difficulty topic. ×

34
knotty(adjective, hard, difficult, delicate)
29
complicated(adjective, hard, difficult, delicate)
27
intricate(adjective, hard, difficult, delicate)
27
rugged(adjective, hard, difficult, complex)
25
trying(adjective, hard, difficult, complex)
21
knotted(adjective, hard, difficult, complex)
20
impossible(adjective, hard, difficult, complex)
20
labyrinthine(adjective, hard, difficult, complex)
19
stubborn(adjective, hard, difficult, complex)
8
awkward(adjective, tough, difficult, delicate)
5
tangled(hard, tricky, complicated)
3
intractable
3
perverse
3
refractory
2
convoluted(adjective, difficult, complex, involved)
1
desperate
1
impracticable
1
obstinate(hard, tricky, complicated)
1
pathless
1
plaguy
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11 years ago|7k views|share |citing 
APASmart Define. (2015). thorny thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/thorny/thesaurus/synonyms
ChicagoSmart Define. 2015. "thorny thesaurus" https://smartdefine.org/thorny/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, thorny thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/thorny/thesaurus/synonyms>.
MLASmart Define. "thorny thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/thorny/thesaurus/synonyms>