The spelling of the word "Hedleigh" can be explained using the International Phonetic Alphabet (IPA). The first sound is "h" which is represented as /h/. The next sound is "e" which can have different forms, but in this case, it is pronounced as the long "a" sound, represented as /eɪ/. The next sound is "d" represented as /d/. The last two sounds are "l" represented as /l/ and "ey" pronounced as the long "e" sound, represented as /i/. Therefore, "Hedleigh" is pronounced as /heɪdli/.