An "apostate" is a person who renounces or abandons their religious faith or beliefs. This term is often used in the context of someone who has left a particular religion, such as Christianity, Islam, or Judaism, and may adopt a different belief system or choose to be non-religious. Apostasy can be a significant and sometimes controversial act, as it may lead to social or familial repercussions. In many cultures, apostasy is viewed negatively, and some religious groups may even impose penalties on those who leave their faith. The concept of apostasy is important in discussions about freedom of religion and the rights of individuals to choose their beliefs without fear of persecution.