The spelling of the word "Dunnagan" is not entirely straightforward when considering its pronunciation. The initial "Dunna" sounds like /dʌnə/, with the schwa sound /ə/ replacing the vowel sound in the second syllable. The final "gan" sounds like /ɡæn/ with a short "a" sound. Therefore, the spelling of "Dunnagan" reflects the pronunciation of the word, with two "n's" to indicate the double "n" sound and the "a" vowel sound spelled with an "a". This complex phonetic transcription helps in proper pronunciation of this word.