An amount or quantity in excess of what is needed, In law, the residuum of an estate after the debts and legacies are paid, That which remains when use or need is satisfied, or when a limit is reached; excess; overplus, adjective_ Being or constituting a surplus; more than sufficient; as, surplus revenues; surplus population; surplus words, more than is needed, desired, or required, Being more than or in excess of what is needed or required_ synonym_ superfluous