ghost

haunt like a ghost; pursue

write for someone else

“How many books have you ghostwritten so far?”

a suggestion of some quality

“he detected a ghost of a smile on her face”

a mental representation of some haunting experience

“he looked like he had seen a ghost”

a writer who gives the credit of authorship to someone else

move like a ghost

“The masked men ghosted across the moonlit yard”

the visible disembodied soul of a dead person