William Patterson is a proper noun and a name that may not have any synonyms. However, there are alternative ways to refer to someone named William or Patterson. Some possible synonyms for the first name William include Bill, Willy, Liam, and Billy. For the last name Patterson, alternatives could be Paterson or Pattison. Additionally, there are variations of the name that people may use, such as Will or Willard for William and Pat or Patsy for Patterson. While there may not be direct synonyms for the full name William Patterson, there are plenty of comparable ways to refer to someone with that name using their first or last name variations.