Bobble (verb)

1. To make a slight, unsteady movement, typically up and down.
2. To make a mistake in catching or handling a ball or other object.
3. To make a mistake or fumble in doing something.

Origin:

The word bobble is thought to have originated in the late 18th century, it is likely an onomatopoeic word, which refers to the action of making a slight, unsteady movement, typically up and down.

Examples:

1. The ball bobbled out of the player's hands.
2. The baby's head bobbled as she fell asleep.
3. He bobbled the catch and the ball went out of bounds.
4. The politician bobbled his answer and confused the audience.
5. I bobbled the keys and dropped them on the floor.