specter has definitions from the field of folklore
1
[ noun ] a mental representation of some haunting experience

Examples

"he looked like he had seen a ghost" "it aroused specters from his past"

Used in print

(Glayds H. Barr, The Master of Geneva....)

The white clad trees stood like specters in the February night .

(S. J. Perelman, The Rising Gorge. New York:...)

Some sort_of nemesis was haunting his footsteps , he told us in a quavering voice - either an ape specter or Abe_Spector , a process_server , we could n't determine which .

Related terms

apparition spook

2
[ noun ] (folklore) a ghostly appearing figure

Examples

"we were unprepared for the apparition that confronted us"

Related terms

spirit Flying_Dutchman

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