Negative euthanasia is often referred to by its synonym, passive euthanasia. Passive euthanasia is a method of ending life by withholding medical treatment or discontinuing life-sustaining measures. While active euthanasia involves administering lethal medication, passive euthanasia allows the person to die naturally without prolonging their suffering. Another synonym for negative euthanasia is non-intervention. This refers to the decision to refrain from intervening in the natural dying process of a person. Terminal sedation is also related to negative euthanasia, where a patient is sedated to relieve pain and suffering until they pass away naturally. These synonyms are often used interchangeably, but it is important to understand the nuances of each term.