90 entries under involved topic. ×

12
perplexing(adjective, hard, fancy, difficult, delicate)
11
obscure(adjective, hard, difficult, delicate, heavy)
10
abstruse(noun, adjective, hard, fancy, difficult)
10
heterogeneous(adjective, union, unity, amalgamation)
10
mixed(adjective, fancy, difficult, unity)
10
tortuous(adjective, difficult, sophisticated, dense)
8
confused(adjective, difficult, complicated, intricate)
8
conglomerate(noun, adjective, mix, mixture)
7
confusing(adjective, hard, delicate, tricky)
7
detailed(adjective, fancy, exact, sensitive, intelligent)
7
entangled(adjective, hard, fancy, difficult)
7
fancy(noun, adjective, hard, passion, desire)
7
miscellaneous(adjective, union, unity, amalgamation)
7
multifarious(adjective, intricate, various, multiple)
7
ornate(adjective, fancy, exact, busy)
7
recondite(adjective, hard, fancy, obscure, difficult)
6
manifold(adjective, abundant, intricate, various)
5
Rococo(adjective, sophisticated, elaborate, complicated)
5
bewildering(adjective, hard, difficult, tricky)
5
motley(adjective, intricate, various)
10 years ago|31k views|share |citing 
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>