pipe-dream
Word family
- pipe dreamnounC1
- pipe-dreamernoun
Synonym discussion
Sense: noun/1
All four words name something pleasant that lives mostly in the imagination, but each carries a different judgement. A pipe dream is the strongest: the speaker has already decided the plan cannot really happen, and often uses 'just' or 'only' to make that clear; it also covers stories or promises pushed at others, as in 'selling a pipe dream'. A fantasy is broader — any imagined scene, from a happy holiday to a darker wish — and does not always carry the verdict 'impossible'. A daydream is the gentlest: a short, pleasant thought during a quiet moment, with no claim about whether it could ever come true. A castle in the air is more literary and old-fashioned, painting a plan that is grand but without any real foundation. So a child has a daydream about flying; a teenager builds castles in the air about fame; an adult finally calls early retirement on a small salary a pipe dream.
Common collocations
Etymology
The expression appeared in American English in the late 1800s and originally referred to the strange, vivid visions that someone had while smoking opium through a pipe. Because those visions were beautiful but bore no relation to real life, English speakers soon used 'pipe dream' for any hope or plan that sounded lovely but had almost no chance of coming true. The opium link faded from everyday awareness, and today most speakers use the phrase without thinking of its drug-related origin.