Pronunciation: [ɒbnˈə͡ʊsɪs] (IPA)
Correct spelling for the English word "obnosis" is [ɒbnˈə͡ʊsɪs], [ɒbnˈəʊsɪs], [ɒ_b_n_ˈəʊ_s_ɪ_s] (IPA phonetic alphabet).