1. (n.) An image formed by the mind, and supposed to be real or material; a shadowy or airy appearance; sometimes, an optical illusion; a phantom; a dream.

2. (n.) A mental image or representation of a real object; a fancy; a notion.

Masan apparition appearance astral astral spirit bamboozlement banshee befooling bluffing brainchild bubble calculated deception chimera circumvention conning control deceiving deception deceptiveness defrauding delirium delusion delusiveness departed spirit disembodied spirit dupery duppy dybbuk eidolon enmeshment ensnarement entanglement entrapment fallaciousness fallacy falseness fancy fantasque fantasy fiction figment figure flimflam flimflammery fond illusion fooling form ghost grateful dead guide hallucination hant haunt hoodwinking idle fancy idolum illusion image imagery imagination imagining immateriality incorporeal incorporeal being incorporeity insubstantial image invention kidding larva lemures maggot make-believe manes materialization mirage myth oni outwitting overreaching phantasma phantasmagoria phantom poltergeist presence putting on revenant romance self-deception shade shadow shape shrouded spirit sick fancy snow job song and dance specter spectral ghost spirit spoofery spoofing spook sprite subterfuge swindling theophany thick-coming fancies trickiness tricking trip unsubstantiality vapor victimization vision waking dream walking dead man wandering soul whim whimsy wildest dream wildest dreams willful misconception wishful thinking wraith zombie