What does Cayleigh mean?
Cayleigh \ca(y)-lei-gh\ as a name for girls. Cayleigh's name origins are Irish and Gaelic, and Cayleigh means "slim and fair; slender". Cayleigh is a variant of Cayla (Irish, Gaelic): from Caoilainn. Cayleigh is also a variant of Kaylee (Gaelic).
Cayleigh has 35 variants: Caela, Caila, Caileigh, Cailey, Cailie, Caleigh▼, Caley, Callie, Caylee▼, Cayley, Caylia, Caylie, Kaelee, Kaeleigh, Kaeley, Kaeli, Kaelie, Kailee▼, Kaileigh, Kailey, Kaili, Kailie, Kalee, Kaleigh▼, Kaley▼, Kalie, Kayla, Kaylea, Kaylei, Kayleigh, Kayley▼, Kayli▼, Kaylie, Kaylleigh and Kaylley.
Cayleigh is an unusual first name for females. Cayleigh is also an unusual surname for both adults and children. (2000 U.S. Census)
Prominent varying forms of Cayleigh (#unlisted) are Kaylee (#52 in 2014), Kayla (#102), Callie (#186), Kayleigh (#278), Kailey (#476), Kaylie (#517), Caylee (#676), Kailee (#859), Kaleigh (#902), Kaylene, Kayley, Kayli, Kalie, Cayla, Kaley, Caleigh and Kayleen. Usage of these girl names reached its apex in the year 1999 (usage of 0.4558%) and is now much less (usage 0.2913%, down 36.1%), with forms such as Caylee, Kaleigh, Kailee, Caleigh and Kayley falling out of style. The more fashionable girl names in this compilation are Callie (#186), Kaylee (#52), Kayleigh (#278), Kayla (#102) and Kailey (#476), and there is a rebound in birth name popularity for Callie. Below is a charted comparison of the usage of Cayleigh and associated names. (Top 1000 Birth Names Records, 2014)