Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
You want to exit the room you're in. Why? Because it has a dead (で) body in it. Seriously. You should exit now. It's a dead (で) room (る)!
Please leave using that exit.
It looks like you have to sneeze, but can't.
I made a hasty exit from that pachinko parlor.