Overbalance Definition

ōvər-băləns
overbalanced, overbalances, overbalancing
verb
overbalanced, overbalances, overbalancing
To provide with more weight or quantity in one area than another.
The coach overbalanced the line by putting more players on the right side.
American Heritage

Outweigh.

Webster's New World
To have greater weight or importance than.
The idea's shortcomings are overbalanced by its strengths.
American Heritage
To throw off balance.
Webster's New World

(intransitive) To overcompensate.

Wiktionary
Synonyms:
noun
overbalances
Something that outweighs or overbalances.
Webster's New World
An excess in weight or quantity.
American Heritage