noun
ADJECTIVE
▪ steady
▪ irregular
▪ racing , rapid
▪
She was suddenly aware of her racing ~.
VERB + HEARTBEAT
▪ monitor
▪ feel
▪ hear
HEARTBEAT + VERB
▪ quicken
PHRASES
▪ the sound of a ~
▪
The first track on the album begins with the sound of a ~.