Pronunciation: [nˈaɹə͡ʊmˌa͡ɪndɪdnəsɪŋ] (IPA)
Correct spelling for the English word "narrowmindednessing" is [nˈaɹə͡ʊmˌa͡ɪndɪdnəsɪŋ], [nˈaɹəʊmˌaɪndɪdnəsɪŋ], [n_ˈa_ɹ_əʊ_m_ˌaɪ_n_d_ɪ_d_n_ə_s_ɪ_ŋ] (IPA phonetic alphabet).