Entry 3 senses · 2 variants Webster, 1913 Overbalance · O·ver·bal·ance · IPA /ˌəʊvə(ɹ)ˈbæləns/ v. t. n. 01 v. t. To exceed equality with; to outweigh. 1. To exceed equality with; to outweigh. 2. To cause to lose balance or equilibrium. 02 n. Excess of weight or value; something more than an equivalent; as, an overbalance of exports. 1. Excess of weight or value; something more than an equivalent; as, an overbalance of exports.