promise the moon/earth/world(redirected from promise the world)
promise (one) the moon
To promise one something that cannot be done. Your clients will come to distrust you if you keep promising them the moon.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
promise the earth
If someone promises the earth, they promise to give people things that they cannot in fact possibly give them. `Politicians have lost credibility,' he complained, `they promise the earth and don't deliver.'
promise the moon
If someone promises the moon, they promise to do or give things that they cannot in fact give. Politicians promise the moon at election time, but do they deliver once they're elected?
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
promise (somebody) the ˈmoon/ˈearth/ˈworld(informal) make very big or impossible promises that you are unlikely to keep: He promised her the moon, but after ten years of marriage they hardly had enough to live on.
Farlex Partner Idioms Dictionary © Farlex 2017