Pronunciation: [ɹɪnˈa͡ʊnəst] (IPA)
Correct spelling for the English word "renownest" is [ɹɪnˈa͡ʊnəst], [ɹɪnˈaʊnəst], [ɹ_ɪ_n_ˈaʊ_n_ə_s_t] (IPA phonetic alphabet).