This volume features a set of selected peer-reviewed articles, which represent cutting-edge research by some very prominent scholars and some promising researchers in the field. The articles cover a wide range of areas in Arabic linguistics, namely Sociolinguistics, Phonetics, Phonology, Morphology, Syntax, and Language Acquisition. They also feature a good number of Arabic dialects namely Egyptian Arabic, Emirati Arabic, Jordanian Arabic, Lebanese Arabic, Sudanese Arabic, and Syrian Arabic. Some of the contributions might be provocative. For example Reem Bassiouney's paper will no doubt trigger a reaction and a fruitful discussion in the field. Other contributions, such as the ones by Stuart Davis, Abdel-khalig Ali, Lababidi & Park, Ntelitheos & Idrissi, present pioneering studies in Arabic Morphology, Phonetics, Phonology, and Language Acquisition respectively. How Arabic can serve as a testing ground for some theoretical constructs and approaches is exemplified by Peter Hallman, Phil Crone, and Youssef Haddad's contributions in the area of Syntax.