Abū al-Fath Usmān Ibnu Jinnī, a prolific Arabic linguistwith more than forty five works, has a significant role inArabic linguistics development. He made some efforts tocool down the tension between the two main schools ofnahwu Bashra and Kufa that competed to penetrate theirinfluence upon Arabic linguistics theories. Ibnu Jinnī, whohad Motazila theological background, tried to bring theArabic linguistic thoughts out of this conflict and took itsway from hegemony of these two schools. He stood upbetween the two schools theories by combining thephilosophical (logical) and sociological approach indiscussing issues of Arabic linguistics. This article tries toexamine the theory, method and approach used by IbnuJinnī in dealing with the linguistics issues. The article findsthat Ibnu Jinnī view is that language is not a mere rationalentity, but it has social dimensions. Based on this theory,Ibnu Jinnī shifted the paradigm of the Arabic linguisticissues from nah} wu based theories debate to a broaderdiscourse and more comprehensive theories coveringinternal or structural aspects such as phonology,morphology, syntax as well as external aspects, notablysociology.