Keili Is A Girls Name With Irish And English Origins. Its A Modern Reimagining Of The Irish Name Caolaidhe, Meaning "slender" Or "pretty." Fans Of Irish Folk Music Will Also Recognize The Similarity Between Keili And Céilí, Which Is The Irish And Scottish Word For A Traditional Social Dance! Keili Is The English Or Anglicized Version, Which Gets A Modern Makeover Thanks To A Capital K, Which Certainly Makes This Pretty Name Standout!