Pronunciation: [ʌnjˈə͡ʊldən] (IPA)
Correct spelling for the English word "Unyolden" is [ʌnjˈə͡ʊldən], [ʌnjˈəʊldən], [ʌ_n_j_ˈəʊ_l_d_ə_n] (IPA phonetic alphabet).