your heart is in your mouth

your heart is in your mouth

If your heart is in your mouth, you feel extremely anxious or nervous, because you think something unpleasant may be about to happen. Note: The heart is traditionally regarded as the centre of the emotions. My heart was in my mouth when I walked into her office. `Wait!' a rough voice commanded. Nancy stopped, then turned, her heart in her mouth.
See also: heart, mouth

your heart is in your ˈmouth

(informal) you feel very anxious or afraid: My heart was in my mouth as I waited to hear whether the jury would find me guilty or not guilty.
See also: heart, mouth