Bantik

Bantik is an endangered Austronesian language, perhaps a Philippine language, of North Sulawesi, Indonesia. It is the traditional language of the Bantik people (a subgroup of Minahasans), who are now switching to Manado Malay (the local variety of Malay) as their language for everyday communication. While using Indonesian for formal and religious occasions. Though Bantik is still used as a marker of ethnic identity.

Bantik is regarded as a men's language, used by men in private, and it is considered improper to speak to women in Bantik. Very few women under the age of 30 know how to speak it.

From Wikipedia · Bantik language · CC BY-SA 4.0