hallucination
noun
[ həˌluːsɪˈneɪʃ(ə)n ]
• an experience involving the apparent perception of something not present.
• "he continued to suffer from horrific hallucinations"
Similar:
delusion,
illusion,
figment of the imagination,
vision,
apparition,
mirage,
chimera,
fantasy,
dream,
daydream,
delirium,
phantasmagoria,
trip,
pink elephants,
phantasm,
