jitter

jit·ter  (jtr)

intr.v. jit·tered, jit·ter·ing, jit·ters

1. To be nervous or uneasy; fidget.

2. To make small quick jumpy movements. The pictures on the wall jitter whenever a truck drives by.

n.

1. A jittering movement; a tic.

2. jitters A fit of nervousness. Often used with the.

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[Perhaps alteration of chitter.]

Thesaurus

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