83 entries under complicated topic. ×

17
awkward(adjective, tough, rough, harsh, delicate)
16
delicate(adjective, hard, awkward, uneasy, tricky)
14
formidable(adjective, hard, tough, severe, evil)
13
abstruse(adjective, hard, obscure, strange, uncertain)
13
perplexing(adjective, hard, fancy, obscure, delicate)
12
obscure(adjective, hard, strange, uncertain, complex)
11
puzzling(adjective, hard, fancy, obscure, strange)
9
baffling(adjective, hard, obscure, strange, uncertain)
9
obstinate(adjective, hard, tough, stubborn)
8
deep(adjective, hard, severe, meaning, abstract)
8
mysterious(adjective, hard, obscure, strange, complex)
8
recondite(adjective, hard, fancy, obscure, strange)
8
touchy(adjective, delicate, awkward, irritable, tricky)
7
problematical(adjective, hard, complex, awkward, demanding)
7
risky(noun, adjective, delicate, awkward, tricky)
5
abstract(adjective, hard, obscure, complex)
5
rocky(adjective, rough, delicate, awkward, troubled)
5
tangled(adjective, hard, complex, sophisticated, involved)
4
confusing(adjective, hard, complex, awkward, involved)
4
convoluted(adjective, hard, fancy, complex, sophisticated)
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APASmart Define. (2016). difficult thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/difficult/thesaurus/synonyms
ChicagoSmart Define. 2016. "difficult thesaurus" https://smartdefine.org/difficult/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, difficult thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/difficult/thesaurus/synonyms>.
MLASmart Define. "difficult thesaurus" 24 March 2016. Web. 21 September 2026. <https://smartdefine.org/difficult/thesaurus/synonyms>