Ghoul.

“What happened to your face?" Blue asked.
Adam shrugged ruefully. Either he or Ronan smelled like a parking garage. His voice was self-deprecating. "Do you think it makes me look tougher?"
What it did was make him look more fragile and dirty, somehow, like a teacup unearthed from the soil, but Blue didn't say that.
Ronan said, "It makes you look like a loser."
"Ronan," said Gansey.
"I need everyone to sit down!" shouted Maura.”
― Maggie Stiefvater, The Raven Boys