If you say that someone does something with impunity, you disapprove of the fact that they are not punished for doing something bad.
例句
Mr Cook said future aggressors would be able to act with impunity if the objectives of the UN weren't met...庫克先生說如果聯合國的目標無法達成,那么將來的侵略者就可能會逃脫懲罰。These gangs operate with apparent impunity.這些團伙明目張膽地活動,卻不受任何懲罰。