[verb] [I] - to seem to see, hear, feel or smell something which does not existMental disorders, drug use and hypnosis can all cause people to hallucinate.(figurative) "I'm sure I saw Mary Tyler in town this morning." "You must have been hallucinating - she emigrated to Australia three years ago."
HALLUCINATE
Meaning of HALLUCINATE in English
Cambridge English vocab. Кембриджский английский словарь. 2012