This chapter presents a critical overview of the different - and sometimes conflicting - definitions of intersubjectivity found in the literature. In general terms intersubjectivity concerns the linguistic realization of a speaker’s attention to a hearer. The chapter proposes a typology of subtypes of intersubjective meanings (nl. attitudinal, responsive and textual), based on the kind of hearer-attention or addressee-accommodation they involve. It zooms in on the relationship with subjectivity and (inter)subjectification, and tries to propose a number of formal recognition criteria for this pragmatic-semantic notion.