The spelling of the word "rotunno" may seem confusing at first glance, but it follows simple phonetic rules. The IPA transcription for "rotunno" is /roʊˈtʌnoʊ/. The "o" sounds in the first and second syllables are pronounced as "oh" while the "u" sound in the third syllable is pronounced as "uh". The double "n" in the fourth syllable indicates a nasalized sound. Overall, the spelling of "rotunno" accurately represents its phonetic pronunciation.