Pronunciation: [mjˈuːd͡ʒiːnsi] (IPA)
Correct spelling for the English word "Mugiency" is [mjˈuːd͡ʒiːnsi], [mjˈuːdʒiːnsi], [m_j_ˈuː_dʒ_iː_n_s_i] (IPA phonetic alphabet).