sophisticate (v.)

c. 1400, "make impure by admixture," from Medieval Latin sophisticatus, past participle of sophisticare (see sophistication). From c. 1600 as "corrupt, delude by sophistry;" from 1796 as "deprive of simplicity." Related: Sophisticated; sophisticating. As a noun meaning "sophisticated person" from 1921.

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Definitions of sophisticate from WordNet
sophisticate (v.)
make less natural or innocent;
Their manners had sophisticated the young girls
sophisticate (v.)
practice sophistry; change the meaning of or be vague about in order to mislead or deceive;
Synonyms: twist / twist around / pervert / convolute
sophisticate (v.)
alter and make impure, as with the intention to deceive;
Synonyms: doctor / doctor up
sophisticate (v.)
make more complex or refined;
a sophisticated design
sophisticate (n.)
a worldly-wise person;
Synonyms: man of the world