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
Wilfred	WIL-frəd	English
Iafeth	-	Biblical Latin
Sorne	-	Basque
Erica	ER-i-kə (English)	English, Swedish, Italian
Lincoln	LING-kən	English
RÓZsa	RO-zhaw	Hungarian