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Synonyms for Sophisticated (same or very similar meaning)

WordNet sense 1 (showing a high degree of refinement and the assurance that comes from wide social experience):
refined, svelte, urbane

WordNet sense 2 (very sophisticated especially because of surfeit; versed in the ways of the world):
worldly

WordNet sense 3 (appealing to or using the intellect):
intellectual

WordNet sense 4 (ahead in development; complex or intricate):
advanced

WordNet sense 5 (resembling or making use of highly advanced technology or devices):
hi-tech, high-tech


From the ODE community, based on WordNetadd/edit