Phantasm - fantasm
- a product of fantasy: such as
mental representation of a real object
- a figment of the imagination; an illusion or apparition.
"the cart seemed to glide like a terrible phantasm"
- delusive appearance
- apparition, ghost, spirit, specter, phantom, ghoul, apparition
- a figment of the imagination
Middle English (in the sense ‘deceptive appearance’): from Old French fantasme, via Latin from Greek phantasma, from phantazein ‘make visible’, from phainein ‘to show’.
The change from f- to ph- in the 16th century was influenced by the Latin spelling.