hyperpolyglot (noun) - fluent in at least six languages; multilingual [hahy-per-pol-ee-glot]
BREAKDOWN: HYPER- (beyond) + POLY- (many) + GLOT- (tongue)
a polyglot is someone or something using, speaking, or written many languages
“Hyperpolyglots are not born, and they are not made, but they are born to be made. There is a finite subset of the human population which has the right neurological equipment for learning and using lots of languages. That equipment may serve only a sub-component of language learning, such as mimicry, pattern recognition, or memory, or it serves those sub-components in a global fashion.” —Michael Erard