Unbalance
(verb)
To cause to be out of balance or equilibrium.
Origin:
From un- + balance.
Examples:
- The weight of the package unbalanced the cart.
- His sudden movement unbalanced her, and she fell.
- The additional load unbalanced the scale.
- The unexpected news unbalanced her emotionally.
- The extra weight on one side of the boat unbalanced it.