—v., -anced, -anc•ing,
to outweigh: The opportunity overbalances the disadvantages of leaving town.
to cause to lose balance or to fall or turn over: He accidentally overbalanced a vase.
an excessive weight or amount.
something that more than balances or more than equals: An overbalance of imports depleted the country's treasury.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.