rahasia

Rahasia (Indonesian) or rahsia (Malay) is a noun meaning "secret" or "secrecy." In Indonesian usage, rahasia denotes information or matters intended to be hidden, as well as the quality of being confidential. The Malay form rahsia carries the same meaning. The term appears in everyday speech, journalism, literature, law, and diplomacy, and it is commonly paired with phrases that describe what should be kept hidden or protected.

Etymology and related forms are shared by Indonesian and Malay. The words rahasia/rahsia are native to the two languages and have cognate forms across the region; the precise historical origin is not uniformly documented in standard references. Related words include kerahasiaan (secrecy) and merahasiakan (to keep secret).

Usage and examples include common expressions such as menyimpan rahasia (to keep a secret), mengungkap rahasia (to reveal a secret), rahasia negara (state secret), and informasi rahasia or data rahasia (confidential information). In technology and security contexts, kunci rahasia refers to a "secret key" in cryptography, while rahasia dapat also describe the level of confidentiality in information handling. The term also appears in cultural and political discourse, often signaling practices of discretion, privacy, or official nondisclosure.