The spelling of the word "Zedad" can be explained using the International Phonetic Alphabet (IPA). It consists of three syllables: /zɪˈdæd/. The first syllable is pronounced with the voiced alveolar fricative sound /z/. The second syllable has the short "i" sound /ɪ/ followed by the voiced dental fricative sound /ð/. The final syllable has the short "a" sound /æ/ and ends with the unvoiced dental fricative sound /d/. Therefore, the correct spelling of this word is "Z-e-d-a-d".