Pronunciation: [tjˈuːnəbə͡lnəs] (IPA)
Correct spelling for the English word "tunableness" is [tjˈuːnəbə͡lnəs], [tjˈuːnəbəlnəs], [t_j_ˈuː_n_ə_b_əl_n_ə_s] (IPA phonetic alphabet).
Correct spelling for tunableness