Arikapú or Maxubí is an endangered Yabutian language.

Loukotka (1968) lists Arikapú and Maxubí as separate languages.

Arikapú is spoken on the Branco River south of the Tuparí tribe.

[2] In 1998, Arikapú was spoken by only six individuals in Rondônia, Brazil, at the headwaters of the Rio Branco.

Nasalisation is indicated by a tilde on the vowel : ⟨ã ä̃ ẽ ĩ õ ũ⟩.