The Heck
In The World, On Earth
adverb
Okay, so this one is really weird, sorry. Each of us only get one body in our lifetimes, right? Well what the heck! What if I want more than one body. Let's all be mad about this together.
いったい
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Just watch out because いち is shortened to いっ here!
一体どうなっているんだ。
What the heck is going on?
「あいとにくしみはひょうり一体」って、一体全体どういういみなんだ！？
What the heck does, "There's a thin line between love and hate," mean?
一体俺が何をしたって言うんだよ？
What the heck did you say I did?