tremor

A tremor is a trembling or shaking in a person or the Earth. If you're scared about speaking in public you might have a tremor in your voice — or wish that an earthquake tremor would open up the floor and swallow you first.

If you're nervous or feeling queasy as you read a paper aloud, you might get a tremor in your hands and the paper itself will start to shake. When an earthquake rumbles, a powerful tremor might make a building shake so that it looks as fragile as a piece of paper. Not every tremor comes from fear or seismic activity, though: you can tremor or quiver with excitement as you anticipate something enjoyable.

Definitions of tremor
1

n an involuntary vibration (as if from illness or fear)

Synonyms:
shudder
Type of:
quiver, quivering, vibration
the act of vibrating

n shaking or trembling (usually resulting from weakness or stress or disease)

Types:
essential tremor
tremor of unknown cause (usually of the hands and head) that develops in older people; often mistaken for Parkinsonism but is not life-threatening and can usually be kept under control
Type of:
palpitation, quiver, quivering, shakiness, shaking, trembling, vibration
a shaky motion

n a small earthquake

Synonyms:
earth tremor, microseism
Types:
aftershock
a tremor (or one of a series of tremors) occurring after the main shock of an earthquake
foreshock
a tremor preceding an earthquake
Type of:
earthquake, quake, seism, temblor
shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity

v shake with seismic vibrations

Synonyms:
quake
Type of:
agitate, shake
move or cause to move back and forth

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