The spelling of the word "Dugall" can be explained using the IPA phonetic transcription. The word is pronounced as /ˈduːɡəl/. The letter "u" represents the long vowel sound /u:/ in English, which is similar to the "oo" sound in words like "soon" or "moon". The letters "g" and "ll" in "Dugall" represent the consonant sounds /ɡ/ and /l/, respectively. This phonetic transcription helps to clarify the pronunciation and spelling of "Dugall".