Ajami script

Ajami (Arabic: عجمي, romanized: ʿajamī) or Ajamiyya (عجمية, ʿajamiyyah), is a variety of Arabic-derived scripts used for writing African languages such as Songhai, Mandé, Fula, Hausa and Swahili, although multiple other languages are also written using the script, including Mooré, Wolof, Kanuri, and Yoruba. They are adaptations of the Arabic script to write sounds not found in Standard Arabic. Rather than adding new letters, modifications usually consist of additional dots or lines added to pre-existing letters.