They have spent an 'unholy' amount of money on the project.
an 'unholy alliance' between politicians and lobbyists
Our finances were an 'unholy' mess.
(..) The gift fit for a king. Do you recognize it? Where did you find this? -On the moors, my slave, Cain found it on the barren hill where nothing grows. I beat him for threading near such unholy place. My lord, isn't this...? So, lord Beowulf... it's come back to you, after all these years. (..)2007 Beowulf