The spelling of the name "Cayleigh" can be explained using the IPA phonetic transcription. The first sound is a voiced velar stop /g/, followed by a long open-mid front unrounded vowel /eɪ/. The third sound is a voiceless palato-alveolar sibilant /ʃ/ and the final sound is a voiced velar fricative /ɣ/. The use of a "C" instead of a "K" and the addition of the extra "e" in the middle of the name are common variations of the traditional spelling "Kayleigh."
The name "Cayleigh" is a variant of the name "Kayleigh" or "Kaylee". The etymology of "Kayleigh" can be traced back to the Gaelic language. It is a combination of two Gaelic elements: "ce" meaning "slender" or "beautiful", and "leighe" meaning "slender or thin". Therefore, the name "Cayleigh" or "Kayleigh" can be interpreted as meaning "slender or beautiful girl" or "graceful and thin". It gained popularity as a given name in the early 20th century, particularly in English-speaking countries.