Definition: Preventive detention is the detention of a person without trial or conviction by a court. Purpose: It is not meant to punish for past actions but to prevent a person from committing a possible offence in the near future. Preventive detention means the detention of a person without trial and conviction by a court for the purpose of preventing him from committing an offence in the future. Learn about the grounds, safeguards, relative laws and issues of preventive detention in India, and how the Supreme Court has interpreted and regulated it. Preventive detention is a legal mechanism that allows for the detention of an individual without a trial or conviction. Learn about the constitutional framework, key laws, judicial review, and challenges of preventive detention in India. For Prelims: Supreme Court, Preventive Detention, Conservation of Foreign Exchange and Prevention of Smuggling Activities Act, 1974, Article 22 (5), Fundamental Rights, Parliament, State Legislature, 44th Amendment Act, 1978, Unlawful Activities (Prevention) Act (UAPA), 1967, Article 21. For Mains: Role of judiciary in balancing democratic principles and personal liberty with preventive detention laws.