Kat

Kat is an English short form of Katherine or Katrina, names ultimately derived from the Greek Aikaterine, whose meaning is debated but commonly associated with the Greek word katharos, meaning pure. It has been used as an independent given name since at least the early modern period in English-speaking countries. The name shares its roots with a wide range of cognates and variants including Kate, Katie, Katya, and Katarzyna.