Synonyms of 'hallucinate'
Miguel stared at him, as if he were hallucinating.
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If you daydream, you think about pleasant things for a period of time, usually about things that you would like to happen.
He daydreams of being a famous journalist.
If you envision something, you envisage it.
trying to envision the outcome of his actions
If you fantasize about an event or situation that you would like to happen, you give yourself pleasure by imagining that it is happening, although it is untrue or unlikely to happen.
I fantasized about writing music.
Thesaurus for hallucinate from the Collins English Thesaurus
If you hallucinate , you see things that are not really there, either because you are ill or because you have taken a drug.