1. (verb) shake with fast, tremulous movements

• quake
• quiver

2. (verb) beat rapidly

• flutter

1. (verb) cause to throb or beat rapidly

• agitate
• shake

2. (verb) shake with fast, tremulous movements

• tremble

3. (verb) beat rapidly

• beat
• pound
• thump

1. (verb) cause to throb or beat rapidly

• palpitant
• palpitating
• palpitation

2. (verb) shake with fast, tremulous movements

• palpitant
• palpitating
• palpitation
• palpitation
• palpitation
• quiver
• quiver
• quiver
• quivering
• quivering
• quivering
• shakiness
• shakiness
• shakiness
• shaking
• shaking
• shaking
• trembling
• trembling
• trembling
• vibration
• vibration
• vibration
• quaker
• trembler
• quiver
• quivering
• vibration

3. (verb) beat rapidly

• flutter
• palpitant
• palpitating
• palpitation