jitter

(the) jitters, nervousness; a feeling of fright or uneasiness: Every time I have to make a speech, I get the jitters.

fluctuations in the image on a television screen or in copy received by facsimile transmission, caused by interference or by momentary failures of synchronization.

to feel or express nervousness or behave nervously: There are some people who jitter about every new technology.As soon as I’m five minutes late coming home, my parents start jittering.

to move rapidly and unevenly, often with small movements: My heartbeat jittered as I waited for the boss in her office.I watched as his expert fingers jittered across the keyboard.

to cause to move or shake rapidly, often with small movements: We drove over a rough patch that jittered the car a bit.He slammed the door so hard it jittered the window blinds.

Computers. to intentionally introduce slight variation or fluctuation in (digital images or sounds) in order to achieve a desired effect; stagger or offset: I had the program jitter the data points to avoid overlap when graphing the results.You can create a trailing blur behind a moving object if you jitter the object, dimming it at each successive position.

(intr) to be anxious or nervous

the jitters nervousness and anxiety

electronics small rapid variations in the amplitude or timing of a waveform arising from fluctuations in the voltage supply, mechanical vibrations, etc