Modern phonetic variant of Cady or Kady, a diminutive of Catherine meaning 'pure.'
Caidy is a modern phonetic variant of Cady or Kady, ultimately a diminutive of Catherine and therefore linked to the meaning pure. Its path is a familiar one in English naming: a long classical name becomes a short form, then the spelling shifts to make the sound feel more current or individual.
The result is a name that preserves inherited meaning while moving decisively into contemporary style. Caidy feels light, direct, and approachable. The spelling gives it a youthful energy, but it is not frivolous; it remains attached to one of the most enduring female name traditions in the English world.
That makes it work as both a nickname-style choice and a full given name. In modern use, Caidy reads as personable and relaxed, a name that feels easy to say yet still slightly uncommon in the crowd of familiar diminutives.