Learn English – word or phrase for “promises that can’t be kept”

phrase-requestssingle-word-requests

I know that renege
is a word that could suit in here. But as I understand, 'renege' describes the failure to keep a promise.

But, sometimes, we make promises that we know all too well that it can't be kept for long. Is there any word or a phrase for such promises?.

Best Answer

You are describing an empty promise, which is a promise that will not be kept. It doesn't directly describe the timeframe in which the promise is broken, but an empty promise will usually not be fulfilled at all.