1
... the heck (e.g. "what the heck?");... in the world (e.g. "why in the world?");... on earth (e.g. "who on earth?")
emph. form of 一体
一体全体何故君がここにいるのだ?
Why on earth are you here?
Other forms
いったい全体 【いったいぜんたい】