Kailyn is an a modern female name in English, a variant of Kaylyn which is a combination of Kay, which is often used as a nickname for Katherine though it has various other meanings depending on its background; and the suffix -lyn, which could, incidentally, derive from Welsh llyn meaning “lake”. However, the Kailyn spelling always makes me think of Kai + lyn, with Kai having its own various etymologies depending on its background, including as a Hawaiian unisex name meaning “sea”, and even as a variant form of Kay.
Katherine is the English form of Greek Aikaterine though the etymology behind the name is not certain. It could be derived from another Greek name, Hekaterine via hekateros meaning “each of the two” or from Hecate, the name of the Greek goddess of witchcraft, the underworld, and crossroads. Though her name is of uncertain meaning it’s often been associated with Greek hekas meaning “far away” so the name would essentially mean “one who works from afar” or “the far-reaching one”. It’s also been linked to Ancient Greek hekṓn meaning “will” or “willing”. It might also be derived from Greek aikia “torture”.
Katherine could also be from a Coptic name meaning “my consecration of your name”. The spelling of the name was later changed to be associated with Greek katharos “pure”.
Origin: uncertain; Hawaiian, Proto-Celtic; Coptic
Meaning: a combination of Kay + lyn, or Kai + lyn
Usage: English (modern)
Pronunciation: kay-lin or kai-lin
- Kaylyn (English)
- Kaylynne (English)
- Kailynne (English)
- Kailin (English)
- Cailyn (English)
- Caylyn (English)
- Cailin (English)