Pronunciation: [ɐstɪtjˈuːʃən] (IPA)
Correct spelling for the English word "ASTITUTION" is [ɐstɪtjˈuːʃən], [ɐstɪtjˈuːʃən], [ɐ_s_t_ɪ_t_j_ˈuː_ʃ_ə_n] (IPA phonetic alphabet).
Correct spelling for ASTITUTION