The spelling of the word "Hewney" follows the pronunciation of the word in IPA phonetics, which is /hjuːni/. The "h" at the beginning represents the aspirated /h/ sound commonly found in English. The "ew" represents the diphthong /juː/, which sounds like "you". The "n" and "ey" represent the /ni/ syllable. Overall, the spelling accurately represents the pronunciation of the word and helps ensure clear communication when using it in written form.