There are a variety of synonyms that can be used in place of the term "Middle English". This period of English language development took place between the Norman Conquest of 1066 and the late 15th century, and is often seen as a transitional time between Old English and Early Modern English. Some potential synonyms for "Middle English" might include "medieval English", "Anglo-Norman English", or simply "Middle Ages English". Regardless of the specific words used, it's clear that this period of linguistic history was crucial in shaping the way modern English developed, and studying Middle English can give us valuable insights into the language and literature of the time.