The spelling of the word "sonu" could be confusing due to the diversity of English pronunciation. However, using the International Phonetic Alphabet (IPA) would ease the process. The phonetic transcription for "sonu" is /ˈsɒnuː/. This means that "s" is pronounced as /s/, "o" as /ɒ/, "n" as /n/ and "u" as /uː/. With the IPA, we can determine that the sound of "sonu" in English is similar to the Indian name "Sonu," which typically means "loved one."