Merriam-Webster's Collegiate® Dictionary, 11th Edition
SOPHISTICATE
I. transitive verb (-cated; -cating)
Etymology: Middle English, from Medieval Latin sophisticatus, past participle of sophisticare, from Latin sophisticus sophistic, from Greek sophistikos, from sophistēs sophist
Date: 15th century
to alter deceptively, to deprive of genuineness, naturalness, or simplicity, to make complicated or complex,
II. noun
Date: 1923
a sophisticated person