The word "ninguno" is commonly misspelled as "inguno" due to the pronunciation of the sound /n/ in Spanish. In IPA phonetic transcription, the correct spelling can be represented as /niŋuno/, with a velar nasal /ŋ/ before the vowel /u/. This sound can be easily confused with the English sound /ŋ/ in words like "sing" or "king". Therefore, it is important to pay attention to the correct spelling of words in order to avoid errors and misunderstandings.