Cipu (Cicipu), or Western Acipa, is a Benue–Congo language spoken by about 20,000 people in northwest Nigeria. The people call themselves Acipu.Like most Benue–Congo languages, Cipu has a complex noun class system. It has a fairly complex phonology with lexical and grammatical tone, vowel harmony, and nasalisation.Cipu speakers virtually all speak the lingua franca Hausa. Many also speak other nearby languages.