The spelling of the word "Isuah" follows the phonetic transcription /ɪsuːə/. The sound of the vowel "i" is pronounced as /ɪ/ while the two vowels "u" and "a" are pronounced as a diphthong /uːə/. The combination of the vowels "u" and "a" forms a sound that is similar to that of the word "urea". The final "h" indicates a slight aspiration of the preceding vowel. This phonetic transcription helps in accurately spelling and pronouncing the word "Isuah".