Kéo language

Kéo or Nagé-Kéo is a Malayo-Polynesian dialect cluster spoken by the Kéo and Nage people (‘ata Kéo 'Kéo people') that reside in an area southeast of the Ebu Lobo volcano in the south-central part of Nusa Tenggara Timur Province on the island of Flores, eastern Indonesia, largely in the eponymous Nagekeo Regency.

Kéo belongs to the Malayo-Polynesian, Central-Eastern Malayo-Polynesian, Bima-Lembata subgroups of the Austronesian language family and there are approximately 40,000 speakers.

Kéo is sometimes referred to as Nage-Kéo, Nage being the name of a neighbouring ethnic group that is generally considered culturally distinct from Kéo; however, whether or not the two languages are separate entities is ambivalent.

Uncommon to Austronesian languages, Kéo is a highly isolating language that lacks inflectional morphology or clear morphological derivation. Instead it relies more heavily on lexical and syntactic grammatical processes.