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.

References

Languages of Cameroon
Official languages	French English
Major languages	Bamum Bulu Duala Ewondo Fulfulde Kom Lamnso Medumba
Indigenous languages	Abon Afade Aghem Ambo Bafaw-Balong Bafia Baka Baldemu Bamali Bambalang Bana Bangolan Bankon Basaa Bata Bati Batu Bebele Bebil Beti Bikya Bishuo Bitare Bomwali Bonkeng Bube Bung Buwal Byep Caka Ceve Chamba Leko Cuvok Daba Dek Dowayo Ɗugwor Duli Eman Esimbi Eton Evant Fa’ Fang Fanji Fe'fe' Fut Gawar Gbanu Gbanzili Ghomala' Gidar Glavda Gude Gunu Gvoko Hausa Hdi Hijuk Hina Hya Ipulo Iyive Jimi Jina Kaalong Kabba Kako Kali Kanuri Kare Kasabe Kera Ki Kogo Kol Koma Kpwe Kuo Kutin Kwa’ Kwakum Kwasio La'bi Lagwan Limba Limbum Luo Maɗa Mafa Majera Makaa Malgbe Manenguba Mangbai Manza Maslam Massa Matal Mazagway Mbə’ Mboa Mbudum Mbuko Mbule Mbum Mefele Məgaka Mengisa Menyam Merey Mesaka Mfumte Mofu-Gudur Moloko Mono Mpade Mpumpong Mser Mundang Mungaka Musgu Muyang Nagumi Nda’nda’ Ndai Nen Nga'ka Ngambay Ngiemboon Ngomba Ngombale Ngwe Nimbari Njem Njerep Nkongho Noho Noni North Giziga North Mofu Northwest Gbaya Nyokon Nyong Nzakambay Nzanyi Nzime Oblo Oroko Otank Pam Papia Parkwa Pinyin Pol Pongo Psikyɛ Rombi Sharwa South Giziga Suwu Swo Tibea Tikar To Tsuvan Tupuri Vame Vemgo-Mabas Vengo Vere Voko Wom Wuzlam Yamba Yambe Yasa Yedina Yemba Yeni Zizilivakan Zulgo-Gemzek Zumaya
See also: General Alphabet of Cameroon Languages