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- There's many a slip twixt cup and lip
There's many a slip twixt cup and lip
There's many a slip twixt cup and lip.
(literary) something that you say in order to warn someone not to be too confident about the result of a plan, because many things can go wrong before it is completed We still might finish in time for the deadline, but there's many a slip twixt cup and lip.
See fall through the cracks, let slip