The Otzeipaonese language (Oikan: otseipauto or paunadu) (Azkali: Anotzeipaona patua) (Otzeipaonese: Ro-otzipao a-batoa), also known as the Otzeipao dialect, or Paonadu, is a language variously described as a mixed language or occasionally a creole, or dialect of Oikan or Azkali spoken in Western Azkali, particularly centered around Otzeipao, and Pordmisktpelha, and to a lesser extant widely across Kalilonde, Sunteria. Due to it's nature as a mixed language, Otzeipaonese is not a part of the Mallo-Brausian language family, nor is it a member of the Azkali languages. Otzeipaonese is mutually intelligible with both Oikan and Azkali, though it remains somewhat more intelligible — though not to an extent where it would be completely intelligible — to Azkali.

With an estimated three and a half million speakers, Otzeipaonese remains the second largest mixed language in which Azkali is a parent language of (the first being Turku Azkali). Otzeipaonese has remained a lingua franca across the Suntero-Azkali border, though declining in recent years due to the influence of both Oikan and Azkali — which virtually all Otzeipaonese speakers can also speak.