What is another word for pipe dream?
Pronunciation: [pˈa͡ɪp dɹˈiːm] (IPA) 
A "pipe dream" is a term used to describe an unattainable or unrealistic goal. There are several synonyms for this term, including "wishful thinking," "fantasy," "delusion," "illusion," and "daydream." All of these words convey a sense of something that is not grounded in reality or is improbable. Other synonyms for "pipe dream" might include "futile endeavor," "vain hope," or "wild goose chase." Whatever the term used, it is clear that when something is referred to as a "pipe dream," it is not something that is likely to happen or should be pursued with any level of seriousness.
