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 WordNet
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