How come the msq keeps using big words?

[Lersayil]

But the Japanese also uses archaic forms? Does it just help to not understand what you're hearing so you can imagine what you please?

Funnily enough, while archaic, and still using many... big words so to say, Urianger is pretty easy to understand in Japanese. I think they went the extra mile with the english version to make him sound as convoluted as possible.

Actually the more I think about it, it isn't even that archaic in japanese, just overly polite, and sophisticated (?).

PS: to be fair both english and japanese are secondary languages to me.