International audienceIt is well-known that there are two opposing views regarding the beginnings of Arabic grammar. Arabic grammar either emerged as an autonomous discipline or it was partly influenced by Greek models (possibly derived through the intermediary of Syriac translations). With regard to this debate, it seems particularly instructive to investigate the category of ʿaṭf bayān. According to Rafael Talmon, ʿaṭf bayān is an ‘invention’ of Sībawayhi (d.180/796?) based on the distinction between ṣifa (‘adjective’) and a modifier that is not an adjective but with an adjectival function (ʿaṭf bayān). The article attempts to show that a similar contrast can already be found in earlier Greek (and Latin) sources, viz. in the distinction b...