Passive euthanasia is the act of withdrawing medical treatment or life support to a terminally ill patient, letting them die naturally. Some synonyms for the term include: non-intervention, withholding treatment, cessation of care, natural death, and withdrawal of treatment. These terms all imply the same action of allowing a patient to die without using aggressive medical interventions to prolong their life. Passive euthanasia is often a controversial topic with varying opinions on medical ethics and patient autonomy. However, understanding the different terms used can help facilitate discussions about end-of-life care and decision-making processes.