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 theorize or hypothesize.
To require to exist or to be true; to imply by the laws of thought or of nature.
To put by fraud in the place of another.
To take for granted; to conclude, with less than absolute supporting data; to believe.
To imagine; to believe; to receive as true.