Cadaverous (adjective)

1. Having a gaunt, pale, and deathlike appearance.
2. Resembling a dead body in appearance or color.

Origin:

Late latin cadāverōsus, from latin cadāver corpse.

Examples:

1. The sickly man had a cadaverous complexion.
2. The haunted house was filled with cadaverous figures.
3. The ghost's cadaverous appearance was enough to make even the bravest person scream.
4. The long illness had left her looking cadaverous.
5. The cadaverous light of the moon gave everything a ghostly appearance.