10
heterogeneous(adjective, union, involved, unity, amalgamation)
10
mixed(adjective, fancy, difficult, involved, unity)
10
tortuous(adjective, difficult, sophisticated, involved, dense)
9
fixation(noun, worry, passion, anxiety, thing)
8
confused(adjective, difficult, involved, complicated, intricate)
8
ticklish(adjective, hard, difficult, delicate, awkward)
8
conglomerate(noun, adjective, mix, involved, mixture)
8
multifaceted(adjective, feature, characteristic, detail, deep)
8
subtle(adjective, hard, delicate, heavy, loose)
7
baffling(adjective, hard, difficult, delicate, awkward)
7
confusing(adjective, hard, delicate, involved, tricky)
7
deep(adjective, hard, obscure, delicate, meaning)
7
detailed(adjective, fancy, exact, sensitive, intelligent)
7
entangled(adjective, hard, fancy, difficult, involved)
7
fancy(noun, adjective, hard, passion, desire)
7
hang-up(noun, worry, passion, desire, anxiety)
7
mazy(adjective, difficult)
7
miscellaneous(adjective, union, involved, unity, amalgamation)
7
multifarious(adjective, involved, intricate, various, multiple)
7
multiskilled
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APASmart Define. (2016). complex thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/complex/thesaurus/synonyms
ChicagoSmart Define. 2016. "complex thesaurus" https://smartdefine.org/complex/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, complex thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/complex/thesaurus/synonyms>.
MLASmart Define. "complex thesaurus" 11 January 2016. Web. 20 September 2026. <https://smartdefine.org/complex/thesaurus/synonyms>