This study investigates the syntactic behavior and the discoursal roles of halaʔ in Jordanian Arabic, which corresponds to the English ‘now’ and is frequently used as a discourse marker. Specifically, the syntactic distribution of this discourse marker in everyday conversations, its function in establishing coherence between discourse units, and its communicative and discoursal meanings are scrutinized. The data necessary for the study was obtained from almost a 15-hour corpus of naturally-occurring conversations recorded by the researchers through 30 interviews with 80 (40 males and 40 females) Jordanian students from Al-Balqa Applied University. The data analysis revealed that halaʔ can be used as an adverb conveying temporal meaning and as a discourse marker conveying coherence-related meanings. Semantically, it is a temporal adverb that has a semantic meaning parallel to that of its English adverbial counterpart ‘now’. However, it was found that halaʔ can also serve six pragmatic functions: Changing a topic, introducing a contrast or comparison, marking disagreement, initiating reasons, explanations or clarifications, listing, and marking shifts in participation framework (Marking a change in the speaker’s orientation and marking a change of footing). The study concludes with a suggested grammaticalization path for the development of this discourse marker from a lexical source.