They have spent an 'unholy' amount of money on the project.
an 'unholy alliance' between politicians and lobbyists
Our finances were an 'unholy' mess.
(..) Extremely dangerous. Kill on sight. Kill on sight. Kill on sight. Night Fury. Speed unknown. Size unknown. The unholy offspring of lightning and death itself. Never engage this dragon. Your only chance: Hide and pray it does not find you. I can almost smell them. (..)2010 How to Train Your Dragon