Pronunciation: [ɛnθˈiːstɪkli] (IPA)
Correct spelling for the English word "Entheastically" is [ɛnθˈiːstɪkli], [ɛnθˈiːstɪkli], [ɛ_n_θ_ˈiː_s_t_ɪ_k_l_i] (IPA phonetic alphabet).