noun / verb
bobble
BAH-bul/bˈɔbʌl/
To move with a small wobble or unsteady bounce.
The mug bobbles between the man's fumbling hands as he tries to catch it.

Etymology
Bob plus the repeated-action ending gives the image of continual jerking movement. Applied to handling an object, this becomes an unsteady, clumsy attempt to keep hold of it.
More examples
- The fielder bobbled the ball before securing it.
- A small bobble delayed the otherwise smooth presentation.
- Her head bobbled with each bump in the road.
Forms
bobble · bobbles · bobbled · bobbling