亡霊 (bourei) Japanese meaning: departed spirit | KotomoraHe appeared as a departed spirit.
At this temple, a ceremony is held to console the souls of the dead.
Usage patterns
〈場所〉に亡霊が出るa ghost appears (in a place)
There's a rumor that a ghost appears in this old mansion.
亡霊にとりつかれるto be haunted/possessed by a ghost
He seemed to be haunted by a ghost.
亡霊のようにlike a ghost (eerily pale, silent, or lifeless)
She appeared silently, like a ghost.