39 entries under difficulty topic. ×

24
hopeless(adjective, broken, pessimistic, desperate)
22
complicated(adjective, hard, difficult, complex)
22
knotty(adjective, hard, difficult, complex)
21
stubborn(adjective, hard, difficult, complex)
21
thorny(adjective, hard, difficult, complex)
20
trying(adjective, hard, difficult, complex)
19
impracticable(adjective, wild, useless, absurd)
19
intricate(adjective, hard, difficult, complex)
19
knotted(adjective, hard, difficult, complex)
19
rugged(adjective, hard, difficult, complex)
18
labyrinthine(adjective, hard, difficult, complex)
2
awkward(adjective, unpleasant, terrible, uneasy)
2
desperate
2
intractable
2
uncertain
1
be impossible(expression, idiom, impossibility)
1
convoluted
1
not feasible(expression, adjective, idiom, impractical)
1
obstinate
1
perverse(adjective, support, attitude)
<12>
10 years ago|14k views|share |citing 
APASmart Define. (2016). impossible thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/impossible/thesaurus/synonyms
ChicagoSmart Define. 2016. "impossible thesaurus" https://smartdefine.org/impossible/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, impossible thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/impossible/thesaurus/synonyms>.
MLASmart Define. "impossible thesaurus" 9 March 2016. Web. 22 September 2026. <https://smartdefine.org/impossible/thesaurus/synonyms>