Quiche.
A person who uses sophisticated words is often called eloquent or articulate, with a strong command of language and vocabulary.
dictionary
difficult vocabulary words
sophisticated
in the first place
Intelligent Wise Sophisticated Educated Wealthy
smart, intelligent, sophisticated, curious, brilliant
abysmal cavernous profound unfathomable
You could use worldly... or refined...
Slender, sweet, stunning, sophisticated
"Of worldwide scope or applicability; having diverse or sophisticated qualities." In other words, cosmopolitan describes something or someone that is worldly, sophisticated, and inclusive of different cultures and perspectives.
Reverse Psychology only pro's of the subject, and sophisticated words will help.