1) Agitate 2) Beat rapidly 3) Flutter or throb 4) Said especially of the heart 5) Shake 6) To beat strongly or rapidly 7) To shake tremulously 1) Pant 
• (v. i.) To beat rapidly and more strongly than usual; to throb; to bound with emotion or exertion; to pulsate violently; to flutter; -- said specifically of the heart when its action is abnormal, as from excitement.
Pal'pi·tate intransitive verb [ imperfect & past participle Palpitated ; present participle & verbal noun Palpitating.] [ Latin palpitare , palpitatum , v. intens. from pappare . See Palpable .] To beat rapi...
tremble beat rapidly and irregularly 
[v] - cause to throb or beat rapidly 2. [v] - beat rapidly
palpitate 1. To move with a slight tremulous motion; to tremble, to shake, or to quiver. 2. To beat with excessive rapidity; to throb. 3. A reference to the heart that beats in an irregular or unusually rapid way, either because of a medical condition or because of exertion, fear, or anxiety.
beat rapidly[Intelligent words] beat rapidly