Save Type Surname Usage Arabic (Maghrebi), Berber Scripts جلاصي(Arabic) Other Forms FormsJelassi Meaning & History From the name of an Tamazight (Berber) tribal confederation in Tunisia; the name could be from Arabic إِخْلَاص (ʾiḵlāṣ) meaning "sincerity, devotion, loyalty" or of unknown Berber meaning.