In this article we concisely describe our theoretical framework, determinacy grammar (DG), including accounts of the determinacy data matrix (DM) and determinacy analysis (DA), together with the associated notions of determinacy accuracy (I) and determinacy completeness (C). The topic of the article is determinacy experience (DE), which we bifurcate into (1) the determinacy of experience [D(E)] and (2) the experience of determinacy [E(D)]. Crucially, the relations involved are held to be frequentative rather than either temporal or spatial. Moreover, there is a need for a priori knowledge in the DM, namely, knowledge of determinacy form (DF), in particular, form which is frequentative rather than temporal or spatial. Finally, questions of knowledge acquisition, attrition (whether in normalcy or pathology), and variation are discussed. We conclude with a conspectus of the contents and some suggestions for further research.