Definition of "overbalance"

overbalance

/ˌəʊvə(ɹ)ˈbæləns/

verb
third-person singular simple present overbalances, present participle overbalancing, simple past and past participle overbalanced
1. To be more important than; to outweigh.
  Quotations
  I thought of giving up this club, which was expensive and of no service to me, and the amusement overbalanced by the late hours.
  1793, James Boswell, in Danziger & Brady (eds.), Boswell: The Great Biographer (Journals 1789–1795), Yale 1989, p. 225
2. (transitive) To cause an imbalance in (something) by means of excess weight or numbers.
3. (transitive) To throw (someone or something) off balance; to cause to capsize.
4. (intransitive) To lose one's balance; to fall over.
noun
plural overbalances
1. Excess of weight or value; something more than an equivalent.
  Quotations
  […] if there is in man's nature a tendency to guilt and ill desert in a vast overbalance to virtue and merit […]
  a. 1758, Jonathan Edwards, Original Sin