Tavoyan or Dawei (ထားဝယ်စကား) is a divergent dialect of Burmese is spoken in Dawei (Tavoy), in the coastal Tanintharyi Region of southern Myanmar (Burma).
[3] Also, voicing can only occur with unaspirated consonants in Tavoyan, whereas in standard Burmese, voicing can occur with both aspirated and unaspirated consonants.
Also, Tavoyan has many loan words from Malay and Thai not found in Standard Burmese.
He attributes this divergence to a migration of Mon speakers into the area north of Dawei in the late 13th century, which would have cut off Dawei from the main Burmese area.
[2] The following is a list of rhyme correspondences unique to the Tavoyan dialect[6] Due to language contact with Malay and Thai, Tavoyan vocabulary has adopted many loanwords that are not otherwise present in standard Burmese.