Pronunciation: [fˈɪlɪŋnəs] (IPA)
Correct spelling for the English word "fillingness" is [fˈɪlɪŋnəs], [fˈɪlɪŋnəs], [f_ˈɪ_l_ɪ_ŋ_n_ə_s] (IPA phonetic alphabet).