L1 users: 400 (Moore 2006). Deb, a separate ethnic group from the Nadëb, now reclaiming their identity by using Nadëb. 280 Deb (2008 M. Rodriquez), 580 Nadëb (2009 FUNASA). Ethnic population: 850 (2010 S. Anonby).
Amazonas state: 3 locations on Uneiuxi river: a tributary of Negro river, Japurá and Negro rivers.
Vigorous. Those living near Santa Isabel are reported to be partially assimilated into local Brazilian culture and may be losing their native language. Those in Riacho Escondido are all full speakers (Crevels 2007).
Latin script [Latn].
Ruhlen (1987) and others classify it as Puinave in Macro-Tucanoan. Seminomadic.