Meaning of “pie in the sky” in the English Dictionary

british dictionary

"pie in the sky" in British English

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pie in the sky

something that you hope will happen but is very unlikely to happen:

Their plans to set up their own business are just pie in the sky.

(Definition of “pie in the sky” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"pie in the sky" in American English

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pie in the sky

something good that is unlikely to happen:

I wanted to be a major league baseball player, but I knew it was probably pie in the sky.

(Definition of “pie in the sky” from the Cambridge Academic Content Dictionary © Cambridge University Press)