1. comparative form of ghostly; more resembling or characteristic of a ghost; more spectral or eerie

Examples

• The abandoned mansion looked even ghostlier in the moonlight.
• Her pale complexion became ghostlier as she grew ill.
• The fog made the trees appear ghostlier than usual.
• Each floor of the old hospital seemed ghostlier than the last.
• The reflection in the mirror looked ghostlier with each passing day.