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1. An involuntary vibration (as if from illness or fear)
   - shudder
    
2. A small earthquake
   - earth tremor, microseism
    
3. Shaking or trembling (usually resulting from weakness or stress or disease)

1. Shake with seismic vibrations
   "The earth was tremoring";
   - quake

Derived forms: tremored, tremoring, tremors

Type of: agitate, earthquake, palpitation, quake, quiver, quivering, seism, shake, shakiness, shaking, temblor, trembling, vibration

Part of: paralysis agitans, Parkinsonism, Parkinson's, Parkinson's disease, Parkinson's syndrome, shaking palsy

Encyclopedia: Tremor