Abstract
The present paper deals with the lexical contribution of Arabic, the dominant language of Sudan, to Koalib, a Kordofanian
language traditionally spoken in the northeastern part of the Nuba Mountains (Southern Kordofan, central Sudan). The study is
based on a corpus of 400 Koalib items borrowed from Arabic, the main characteristics of which (social context, phonology, part
of speech and semantics) are successively examined and discussed. The conclusion summarizes the main typological implications
of the Arabic influence upon the Koalib grammatical system.