Wobble is defined as to move or cause to move in an unsteady way, to have your voice quiver, or to be unable to commit to a course of action.(verb)
The definition of a wobble is an unsteady movement, or a quiver in the voice.(noun)
See wobble in Webster's New World College Dictionary
Origin: prob. < LowG wabbeln, to wobble: for IE base see wave
See wobble in American Heritage Dictionary 4
also wab·bleverb wob·bled also wab·bled, wob·bling also wab·bling, wob·bles also wab·bles verb, intransitive
Origin: Probably from Low German wabbeln; see webh- in Indo-European roots.
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