Pronunciation: [ɐlˈɒnsa͡ɪn] (IPA)
Correct spelling for the English word "Alonsine" is [ɐlˈɒnsa͡ɪn], [ɐlˈɒnsaɪn], [ɐ_l_ˈɒ_n_s_aɪ_n] (IPA phonetic alphabet).