have heart in mouth

have (one's) heart in (one's) mouth

To feel very nervous or anxious. I had my heart in my mouth as I waited for the ambulance to arrive.
See also: have, heart, mouth
Farlex Dictionary of Idioms.

have one's heart in one's mouth

Fig. to feel strongly emotional about someone or something. (See also one's heart is in one's mouth.) I had my heart in my mouth when I heard the national anthem.
See also: have, heart, mouth
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

have (one's) heart in (one's) mouth

To be extremely frightened or anxious.
See also: have, heart, mouth
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • have your heart in your mouth
  • heart in one's mouth, have one's
  • have (one's) heart in (one's) mouth
  • (one's) heart is in (one's) boots
  • lose heart to
  • lose one's hear to
  • lose your heart
  • lose (one's) heart to (someone)
  • have a heart
  • lose heart