Phantasmal

fænˈtæzməl

adjective

of, relating to, or resembling a phantasm; illusory; spectral

The word 'phantasmal' is derived from the Latin word 'phantasma,' which means apparition or ghostly figure. It is often used to describe something that is ghostly or unreal in nature.

Phantasmal mirth, folded away: muskperfumed.

James Joyce

Ulysses

Mr. Audley, the chairman, was an amiable, elderly man who still wore Gladstone collars; he was a kind of symbol of all that phantasmal and yet fixed society.

G. K. Chesterton

The Innocence of Father Brown