cross my heart (and hope to die)

cross my heart (and hope to die)

A vow that one is being truthful. Billy's the one who broke the cookie jar—cross my heart and hope to die!
See also: cross, heart, hope

cross my heart and hope to die

Attest to the truth of something; solemnly assure someone that the truth has been spoken. For example, I did lock the door-cross my heart and hope to die! This phrase most likely originated as a religious oath based on the sign of the cross; it is generally accompanied by hand gestures such as crossing one's hands over one's breast and then pointing the right hand skyward (a variant is cross my heart and point to God). Today most often uttered by children, it was first recorded in 1908.
See also: and, cross, die, heart, hope

cross my heart

or

cross my heart and hope to die

SPOKEN
You can say cross my heart or cross my heart and hope to die when you want to assure someone that you are telling the truth. Note: The heart is traditionally regarded as the centre of the emotions. And I won't tell any of the other girls about it. I promise, cross my heart. Sam grinned and held out his hand toward her. `You don't have to worry, okay.' — `Are you sure?' Erin asked. — `Cross my heart and hope to die.' Note: This expression is used mainly by children. Note: This expression refers to the Christian practice of moving your hand across your chest in the shape of a cross.
See also: cross, heart