In many linguistic approaches and theories, a distinction is made between adverbs that are propositional (representational, ideational, referential) and adverbs that are non-propositional (interpersonal, (inter)subjective, evaluative, parenthetical); i.e. between what is said (the proposition expressed) and a speaker’s stance on what is said (e.g. the speaker’s attitude towards, evaluation of, or commitment to the message conveyed). As is well-known, however, the latter group, including such diverse adverbs as briefly, frankly, sadly, allegedly, hopefully, probably, obviously and cleverly, differ substantially in terms of their discourse-pragmatic or semantic function, truth-conditionality and syntactic and prosodic behaviour. This paper addresses the question of whether, given this functional and formal heterogeneity, it is helpful, or even possible, to recognize a category of stance adverbs. It is argued that our understanding of these adverbs will benefit from a stricter application of very specific functional and formal criteria, allowing for the distinction of a number of well-defined subclasses of adverbs with partly overlapping, but nevertheless defining functional and formal properties. Subsequently, it is demonstrated how the theory of Functional Discourse Grammar (FDG), a theory characterized by a “form-oriented function-to-form” approach (Hengeveld and Mackenzie, 2008: 38–39), making use of different levels and layers of linguistic analysis, can be used to bring out both the similarities and the differences between the various subclasses of stance adverbs without having to resort to a single dichotomy (e.g. ideational vs. interpersonal; truth-conditional vs. non-truth-conditional, propositional vs. non-propositional; parenthetical vs. non-parenthetical). In addition, it is shown how important concepts and distinctions in the literature on (inter)subjectivity, such as the distinction between semantic and pragmatic subjectivity, and between subjectivity and intersubjectivity, can be dealt with within the framework of FDG.