The spelling of the name "Keitha" can be explained using the International Phonetic Alphabet (IPA). "Keitha" is pronounced as /kiːθə/ according to IPA. The first two letters "Kei" are pronounced as /ki/, followed by the voiced dental fricative sound /ð/. The final letters "tha" are pronounced as the schwa sound /ə/. Therefore, "Keitha" is a five-letter name with a unique and distinctive spelling, representing its distinctive pronunciation.