jitter

Noun
  1. Small rapid variations in a waveform resulting from fluctuations in the voltage supply or mechanical vibrations or other sources (synset 107446102)
    is a type of: disturbance, interference, noise - electrical or acoustic activity that can disturb communication
  2. A small irregular movement (synset 107360560)
    is a type of: motion, movement - a natural event that involves a change in the position or location of something

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