The most common usage of the Greek particle οὖν/oûn is to create coherence within a large portion of discourse and convey inferential meaning. This chapter addresses its usage in documentary papyri of the Roman and Byzantine periods, aiming at providing a preliminary general exploration of the contextual usage of this particle and approaching it through pragmatic and discourse analysis approaches. It focuses on the linguistic elements that surround this particle and identifies different patterns that frequently occur within the corpus of documentary papyri. By using the PapyGreek treebank corpus and Trismegistos, statistics for these patterns are added in order to draw observations on the co-occurrence of the particle and other linguistic elements that precede it. By means of examples, the chapter discusses a selection of these patterns, their context of use, and their linguistic function. It analyses the position of some οὖν/oûn utterances, which for instance typify a request, a warning, or a piece of advice, looking at their sequential placement within the discourse. It therefore addresses the question of how inferences are constructed and conveyed. Finally, focusing on some cases of negative οὖν/oûn utterances, the chapter discusses some aspects of their meaning and functions by using a cognitive linguistic approach.