Beat abnormally fast (9)

I believe the answer is:
palpitate
(Other definitions for palpitate that I've seen before include "quake" , "quiver" , "Beat abnormally quickly" , "flutter" , "Shake, tremble" .)
I believe the answer is:
palpitate
(Other definitions for palpitate that I've seen before include "quake" , "quiver" , "Beat abnormally quickly" , "flutter" , "Shake, tremble" .)