HALLUCINATE
hallucinate
(verb) perceive what is not there; have illusions
Source: WordNet® 3.1
Etymology
Verb
hallucinate (third-person singular simple present hallucinates, present participle hallucinating, simple past and past participle hallucinated)
(transitive and intransitive) To seem to perceive things (with one or more of one's senses) which are not really present; to have visions; to experience a hallucination.
Synonyms
• (seem to perceive what is not present): imagine, see things
Source: Wiktionary
Hal*lu"ci*nate, v. i. Etym: [L. hallucinatus, alucinatus, p. p. of
hallucinari, alucinari, to wander in mind, talk idly, dream.]
Definition: To wander; to go astray; to err; to blunder; -- used of mental
processes. [R.] Byron.
Source: Webster’s Unabridged Dictionary 1913 Edition