Bruneian Malay

Brunei Malay (Bahasa Melayu Brunei), or Kedayan (Kadaian), sometimes conflated as Brunei-Kadaian, is the national language of Brunei and a lingua franca in parts of East Malaysia. It is not the official language of Brunei, which is standard Malay, but is socially dominant and is replacing minority languages. It is quite divergent from standard Malay and is mostly mutually unintelligible with it.