wobble (
http://definr.com/wobble)
n : a rocking motion
v 1: move unsteadily; "His knees wobbled"; "The old cart wobbled
down the street" [syn:
coggle]
2: move sideways or in an unsteady way, as of a ship or a
vehicle out of control [syn:
careen,
sway,
shift,
tilt]
3: tremble or shake; "His voice wobbled with restrained
emotion" [syn:
shimmy]