3. exception. Exemption, immunity, impunity imply special privilege or freedom from imposed requirements. Exemption implies release or privileged freedom from some duty, tax, etc.: exemption from military service. Immunity implies freedom from a penalty or from some liability, especially one that is disagreeable or threatening: immunity from disease. Impunity (limited mainly to the fixed expression with impunity ) primarily suggests freedom from punishment: The police force was so inadequate that crimes could be committed with impunity.