ETYM Old Eng. gastlich, gostlich, AS. gâstlic. Related to Ghost.
1. Of or pertaining to ghosts or apparitions.
2. Relating to the soul; not bodily or secular; spiritual.
Pertaining to, of the nature of, or resembling, a phantasm; spectral; illusive.
Ghostlike, resembling a ghost, spectral
In a ghostly manner, in a spectral manner