heart is in mouth

somebody's heart is in their mouth

if someone's heart is in their mouth, they feel extremely nervous My heart was in my mouth as I walked onto the stage.

Name	Pronounced	Usage
Aubert	-	French
Krsto	-	Croatian
Sizwe	-	Southern African, Xhosa
Reese	-	Welsh
Edweena	ed-WEEN-a	English (Rare)
Jacenty	yah-TSEN-ti	Polish (Rare)