Pronunciation: [ɒbzˈɜːvɜːsɪz] (IPA)
Correct spelling for the English word "observerses" is [ɒbzˈɜːvɜːsɪz], [ɒbzˈɜːvɜːsɪz], [ɒ_b_z_ˈɜː_v_ɜː_s_ɪ_z] (IPA phonetic alphabet).