fibrillate

Example:The old clock's hands were quivering slightly.

Definition:To shake slightly and rapidly, often in an irregular manner.

Example:The dog's ears were twitching constantly in the wind.

Definition:To make a sudden, involuntary movement, often due to irregular muscle contractions.

Example:After the earthquake, the building was still experiencing tremors.

Definition:A shaking movement, usually involuntary and caused by a rapid, repetitive muscle contraction.