Cassey is a feminine name that serves as a variant spelling of Casey or Cassie. If derived from Casey, it comes from an Irish surname meaning 'vigilant' or 'watchful,' while as a variant of Cassie, it would be a diminutive of Cassandra, meaning 'she who entangles men' in Greek. This particular spelling combines elements of both names, offering a distinctive touch while maintaining familiar sounds. Cassey experienced moderate popularity during the 1980s and 1990s but remains less common than other variations. The name has a friendly, approachable quality with its soft ending sound while still feeling contemporary. Parents might choose this spelling to add uniqueness to a recognizable name.