Austroasiatic languages
The phonology of Mundari is similar to the surrounding closely related Austroasiatic languages but considerably different from either Indo-Aryan or Dravidian. Perhaps the most foreign phonological influence has been on the vowels. Whereas the branches of Austroasiatic in Southeast Asia are rich in vowel phonemes, Mundari has only five. The consonant inventory of Mundari is similar to other Austroasiatic languages with the exception of retroflex consonants, which seem to appear only in loanwords. (Osada 2008)