Originally Posted by
noglider
Arguing about polylingual people is a bit nonsensical, because poly- is Greek, and -lingual is Latin. I think you meant multilingual.
Ba-dum-bum.
https://en.wiktionary.org/wiki/polylingual
Hybrid words are common, even in English.
https://en.wikipedia.org/wiki/Hybrid_word
Television is one of the most common, even though I haven't acquired one.