look as if you have seen a ghost

look as if (one) has seen a ghost

To look terrified, shocked, or pale from fright. What's wrong, Daniel? You look as if you've seen a ghost! The test was so nerve-racking that I came away looking as if I had seen a ghost.
See also: ghost, if, look, seen
Farlex Dictionary of Idioms.

look as if you have seen a ghost

look very pale and shocked.
See also: ghost, have, if, look, seen
Farlex Partner Idioms Dictionary
See also:
  • look as if (one) has seen a ghost
  • look as though (one) has seen a ghost
  • look like (one) has seen a ghost
  • look on with
  • look on with (someone)
  • look ahead
  • have a look-see
  • get a dirty look (from someone)
  • give somebody/get a dirty look
  • dragged through a hedge backward(s)