See top-secret for more top secretBrE /ˌtɒp ˈsiːkrət/ 🔊NAmE /ˌtɑːp ˈsiːkrət/ 🔊 adjectivethat must be kept completely secret, especially from other governments （尤指对他国政府）最高机密的，绝密的◆This information has been classified top secret. 这一情报被归为绝密类别。🔊🔊◆top-secret documents绝密文件