Pronunciation: [ˌantɪkwˌɔːtɐnˈe͡əɹi͡əm] (IPA)
Correct spelling for the English word "Antiquartanarium" is [ˌantɪkwˌɔːtɐnˈe͡əɹi͡əm], [ˌantɪkwˌɔːtɐnˈeəɹiəm], [ˌa_n_t_ɪ_k_w_ˌɔː_t_ɐ_n_ˈeə_ɹ_iə_m] (IPA phonetic alphabet).