What is tess short for?

There is not enough information provided to give a clear answer. It is possible that "Tess" is short for a longer name, such as Teresa or Tessa. Tess is also a standalone name that can be of English, Greek, or Hebrew origin. It is typically used as a nickname for girls' names that start with "T," but can also stand on its own as a unique name. The name Tess can be traced back to Roman and Shakespearean literature, and today is a popular choice for baby girls.