Bookah

"Bookah" as a phrase means inferior being, or outsider in Asurian. It is also the name of loud, bellowing, make-believe monsters that Asura created to scare children.

Trivia
In Polish language version word "bookah" is translated as "fajtłapa", which is insult similar to English "fool" (but not exactly). Also the word "Bookah" sounds very similar to the Japanese word "Baka" which means idiot or imbecile

In Russian language a word "bookah" means the same as Asuran. Also a localize firm of Guild Wars in Russia carries the that name, and pronounced similarly.