Source : WordNet®

ghostlier
     See {ghostly}

ghostly
     adj : like or being a phantom; "a ghostly face at the window"; "a
           phantasmal presence in the room"; "spectral
           emanations"; "spiritual tappings at a seance" [syn: {apparitional},
            {ghostlike}, {phantasmal}, {spectral}, {spiritual}]
     [also: {ghostliest}, {ghostlier}]