(n.) Evil practice; illegal or immoral conduct; practice contrary to established rules; specifically, the treatment of a case by a surgeon or physician in a manner which is contrary to accepted rules and productive of unfavorable results.

abuse abuse of office bad policy befoulment conversion corrupt administration crime criminal tendency criminality criminosis debasement defalcation defilement desecration diversion embezzlement evil courses evildoing feloniousness fouling impolicy inexpedience inexpediency lawbreaking maladministration malfeasance malversation misadministration misapplication misappropriation misconduct misdemeanor misdirection misdoing misemployment misfeasance misgovernment misguidance mishandling mismanagement misprision misprision of treason misrule misusage misuse neglect negligence nonfeasance omission peculation perversion pilfering pollution poor stewardship positive misprision profanation prostitution sin thou scarlet sin vice viciousness violation wrong conduct wrongdoing