92 entries under complex topic. ×

47
complex(adjective, hard, difficult, involved)
36
refined(adjective, smooth, reasonable, slight, fancy)
33
complicated(adjective, hard, difficult, involved)
32
elaborate(adjective, hard, difficult, involved)
30
intricate(adjective, hard, difficult, involved)
30
involved(adjective, hard, difficult, dense)
28
knotty(adjective, hard, difficult, involved)
27
elegant(adjective, style, fancy, exact, superior)
27
tricky(adjective, hard, difficult, deception)
25
labyrinthine(adjective, hard, difficult, involved)
24
daedal(adjective, hard, difficult, involved)
24
sensitive(adjective, hard, difficult, superior)
23
byzantine(adjective, hard, difficult, involved)
23
profound(adjective, hard, difficult, intelligent)
22
gordian(adjective, hard, difficult, involved)
21
difficult(adjective, hard, involved, dense)
20
arduous(adjective, hard, difficult, intricate)
20
serious(adjective, hard, difficult)
20
thorny(adjective, hard, difficult, involved)
19
hard(adjective, difficult, involved, complicated)
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APASmart Define. (2015). sophisticated thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sophisticated/thesaurus/synonyms
ChicagoSmart Define. 2015. "sophisticated thesaurus" https://smartdefine.org/sophisticated/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, sophisticated thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sophisticated/thesaurus/synonyms>.
MLASmart Define. "sophisticated thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/sophisticated/thesaurus/synonyms>