ghostier

/ˈɡoʊstiər/
adjective
  1. More like a ghost; more pale, faint, or eerie in appearance or feeling.
    • Her face turned ghostier as she heard the strange noise coming from the attic.
    • The second painting was ghostier than the first, with softer colors and blurry shapes.
    • The old house looked even ghostier in the fog than it did in the sunlight.