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general::
Phrase(s): promise the moon (to someone) [and] promise someone the moon
to make extravagant promises to someone. • Bill will promise you the moon, but he won’t live up to his promises. • My boss promised the moon, but never gave me a raise., Phrase(s): promise someone the moon
Go to promise the moon (to someone).
McGrawhill's American Idioms And Phrasal Verbs