Al-Khalil ibn Ahmad al-Farahidi

Khalil Farahidi ya kasance malamin nahawun Larabci da ya yi fice a fagen ilmin sauti da wazan kalmomi. Ya rubuta litattafai da dama game da waɗannan fannonin, cikin hada da littafin da ake kira 'Kitab al-'Ayn', wanda ake la'akari da shi a matsayin ɗaya daga cikin manyan ayyuka a fagen nahawu. Khalil Farahidi ya kuma kirkiro da tsarin raba sautin Larabci zuwa bangarori uku: Nahawu, Sarf, da Lugga.