US Popularity Rank: 8001

Origin: Irish

Meaning: Slender and fair

Kaylei is a respelling of the beloved feminine names Kaylee and Kayleigh and is considered an Americanized form of the Irish surname O’Caollaidhe. Meaning “slender” and “fair,” this age-old title comes from an era when words to describe people’s appearances were used as surnames. Kaylei, Kaylee, Kayleigh, Caileigh, Kayley, and many more variations are beloved by US parents, likely because this lyrical name sports the popular K-spelling and endearing -lee finish. You could honor baby’s Irish ancestry with this adorable title, but it’s safe to say Kaylei is more of a modern American invention that will keep baby in fashion with the K trend.