The word "prefatorial" is used to describe something related to or resembling a preface, such as an introductory statement or remarks. Some synonyms for "prefatorial" might include introductory, preliminary, opening, prologue, preamble, or foreword. These terms all indicate a beginning or starting point for a piece of writing or discussion. Other related words might include preliminary, initial, or preparatory, which suggest a preliminary or preparatory stage before the main event or discussion. By using synonyms for "prefatorial," writers can vary their language and convey a sense of nuance or specificity in their writing.