Matanawi (MatanauÃÂ, Mitandua, Moutoniway) is an extinct divergent Amazonian language isolate that may be distantly related to the Muran languages. It was originally spoken on the Castanha River and Madeirinha River in Amazonas State.
Comparison between Matanawàlanguage and Pirahã:
A few words collected by Curt Nimuendajú in 1922, from Indian João Comprido (resident in Surupy, Lower Marmelos River), are given below