airy hope airy nothing apparition autism brainchild bubble daydream deception delirium deluded belief delusion dereism dream dream vision dreamland dreamworld eidolon false belief fancy fantasque fantasy fiction figment golden dream hallucination idle fancy ignis fatuus illusion imagery imagination imagining insubstantial image invention maggot make-believe misbelief misconception mosaic myth phantasm phantom pipe pipe dream pomato potomato quixotic ideal rainbow romance self-deceit self-deception self-delusion sick fancy thick-coming fancies topato trick trip unreal hope utopia vapor vision whim whimsy wildest dreams wrong impression