a supernatural appearance of a person or thing, esp. a ghost; a specter or phantom; wraith

a ghostly apparition at midnight.

anything that appears, esp. something remarkable or startling

the surprising apparition of cowboys in New York City.

an act of appearing; manifestation.

Astronomy . the appearance or time when a comet, esp. a periodic one, is visible

the 1986 apparition of Halley's comet.

noun

animate , being

noun

bogeyman , bump in the night , chimera , delusion , hallucination , haunt , illusion , phantasm , phantom , revenant , specter , spirit , spook , visitant , bogey , bogle , eidolon , phantasma , shade , shadow , wraith , appearance , bogie , fantasy , ghost , hobgoblin , phenomenon