The spelling of the word "mannino" can be confusing due to its double consonants. In IPA phonetic transcription, it would be spelled as /məˈninəʊ/. The first "n" is pronounced with a nasal "n" sound, while the double "n" in the middle is a geminate consonant, representing a longer nasal "n" sound. The final "o" is pronounced with a long vowel sound. Remembering the geminate "n" is key to correctly spelling and pronouncing this word.