Pronunciation: [spˈə͡ʊsə͡ʊ] (IPA)
Correct spelling for the English word "SPOSO" is [spˈə͡ʊsə͡ʊ], [spˈəʊsəʊ], [s_p_ˈəʊ_s_əʊ] (IPA phonetic alphabet).