To take a customary action to ward off some misfortune that is believed to be attracted by a presumptuous statement.
Hopefully; a self-directive to undertake the customary action to ward off bad luck.
To have a presentiment of; to feel beforehand; to foreknow.
To make a prediction.
To predict or foretell something.
A warning of a future event; an omen.
An intuition of a future event; a presentiment.