Pronunciation: [ɐbsˈɜːdə͡ʊ] (IPA)
Correct spelling for the English word "Abserdo" is [ɐbsˈɜːdə͡ʊ], [ɐbsˈɜːdəʊ], [ɐ_b_s_ˈɜː_d_əʊ] (IPA phonetic alphabet).