hallucinate
Concise Oxford English Dictionary © 2008 Oxford University Press:
hallucinate /həˈluːsɪneɪt/
▶verb experience a seemingly real perception of something not actually present.
– derivatives
hallucinant adjective & noun,
hallucination noun,
hallucinator noun.
hallucinant adjective & noun,
hallucination noun,
hallucinator noun.
– origin C17: from L. hallucinat-, hallucinari ‘go astray in thought’, from Gk alussein ‘be uneasy or distraught’.
'hallucinate' also found in these Oxford entries:

