Ndai language

Ndai, also known as Galke or Pormi, is a nearly extinct Mbum language of northern Cameroon.

Maybe needs disambiguation from aforemention obscurity:

Shibboleth thought to be used in some modern top-down hierarchal organizations, sometimes cult-like settings, esp. in military, para-military and intelligence settings. Insert source: Etymologically originated from conflation of Non Disclosure Agreement In-place and No Doubt About It. Pronouced "n-die" (verify phonetics) but not affiliated with the Hebrew activist N'dai organization.