-change from the natural character or simplicity, or the resulting condition.
-complexity, as in design or organization.
-impairment or debasement, as of purity or genuineness.
-the use of sophistry; a sophism, quibble, or fallacious argument.
(Antonym -simplicity )
"I have always thought of sophistication as rather a feeble substitute for decadence." - Christopher Hampton
"Hip is the sophistication of the wise primitive in a giant jungle." - Norman Mailer
"Sophistication might be described as the ability to cope gracefully with a situation involving the presence of a formidable menace to one's poise and prestige (such as the butler, or the man under the bed -- but never the husband)." - James Thurber