14
hard work(feature, state, characteristic)
11
predicament
8
extreme devotion
8
jealous
8
not good
6
on demand
5
dark(adjective, obscure, deep, ambiguous, cryptic)
5
more difficult
5
very long work
4
arduous
4
awkward(adjective, hard)
4
baffling
4
challenging
4
embarrassing
4
knotty
4
ruminative
4
sticky
4
tall
4
thorny(adjective, hard)
4
troublesome(adjective, hard)
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APASmart Define. (2016). difficult thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/difficult/thesaurus/related
ChicagoSmart Define. 2016. "difficult thesaurus" https://smartdefine.org/difficult/thesaurus/related (accessed September 20, 2026).
HarvardSmart Define 2016, difficult thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/difficult/thesaurus/related>.
MLASmart Define. "difficult thesaurus" 24 March 2016. Web. 20 September 2026. <https://smartdefine.org/difficult/thesaurus/related>