wobble
verb
[ ˈwɒb(ə)l ]
• move or cause to move unsteadily from side to side.
• "the table wobbles where the leg is too short"
wobble
noun
• an unsteady movement from side to side.
• "the handlebars developed a wobble"
Origin:
mid 17th century (earlier as wabble ): of Germanic origin; compare with Old Norse vafla ‘waver’; related to the verb wave.