That is a phantom; merely apparent, illusory, imaginary. Also: false, fake; devised to imitate or deceive.

Having the ethereal or magical qualities associated with fairies, or with the (imaginary) realm or world in which they live; enchanted, illusory…

Having the quality of illuding or tending to deceive by unreal prospects; of the nature of an illusion; illusive.

Fictitious, imaginary; pretended. Cf. scenic, adj. 2a. Obsolete.

That tends to illude or deceive by unreal appearances; productive of illusion or false impression; deceptive; illusory.

Misleading, deceptive, illusive. Obsolete.

Like the Barmecide's feast; imaginarily satisfying or sumptuous; unreal, illusory.

Characterized by illusions; of the nature of an illusion; illusory.

Pertaining to, characterized by, or subject to illusions.