The spelling of the word "KEL" can be explained using the International Phonetic Alphabet (IPA). In IPA, "K" represents the voiceless velar plosive sound, which is produced by stopping the airflow using the back of the tongue against the velum. The vowel sound in "KEL" can be represented by the symbol "ɛ," which represents the open-mid front unrounded vowel sound. Therefore, the proper way to spell "KEL" using IPA is /kɛl/. This spelling accurately represents the sounds of the word.