Slender or fair
Kailly is a modern phonetic variant of the Irish name Kaylee or Caoilainn. It is often interpreted as a combination of the elements 'caol', meaning slender, and 'fionn', meaning fair or pure.
Fewer than 5 girls were named Kailly in 2025.
US births per 5-year period, 1990–present (SSA data).
