contracts, torts. The unjust performance of some act which the party had no right, or which he had contracted not to do. It differs from misfeasance, and nonfeasance. Most frequently used to describe public officials who commit a criminal act, for example, taking a bribe. The wrongful or unjust doing of some act which the doer has no right to perform, or which he has stipulated by contract not to do. It differs from “misfeasance” and “non feasance,” (which titles see.)