The spelling of the word "Esexual" is based on its pronunciation, which can be transcribed phonetically as /iːˈsɛkʃuəl/. The initial "E" represents the sound /iː/, as in "eel", followed by the consonant cluster /s/ and the vowel sound /ɛ/ as in "bet". The next consonant cluster, /kʃ/, represents the sounds /k/ and /ʃ/ pronounced in sequence. Finally, the word ends with the vowel sound /uəl/ pronounced like the word "you'll". Overall, the spelling of "Esexual" reflects its unique pronunciation.