Categoriality in Language Change : Oxford University Press : 9780190917579 : 0190917571 : 22 Apr 2019 : This book presents the first serious attempt to set out a functional-semantic definition of diachronic transcategorial shift between the major classes noun/nominal and verb/clause. In English, speakers have different options to refer to an event, ranging from that-clauses (That he had guessed her size) over infinitives (For him to guess her size) and verbal gerunds (Him guessing her size) to nominal gerunds (His guessing of her size) and deverbal nouns (His guess of her size). Interestingly, not only do these strategies each resemble "prototypical" nominals to varying extents, but also some of these strategies increasingly resemble clauses and decreasingly resemble prototypical nominals over time, as if they are gradually shifting categories. Thus far, the literature that has dealt with such cases of diachronic categorial shift has mainly described the processes by focusing on form,