pale as a ghost
(as) pale as a ghost
Exceptionally pale, as due to nausea or fear. I get terrible motion sickness, so I'm sure I was as pale as a ghost when I stumbled off the plane. She was pale as a ghost after that car nearly ran into her on the sidewalk.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
*pale as a ghostand *pale as death
very pale. (*Also: as ~.) Laura came into the room, as pale as a ghost. "What happened?" her friends gasped. What's the matter? You're pale as death!
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.