Pronunciation: [fˈɔːnɪŋ ˌʌp ˈɒn] (IPA)
Correct spelling for the English word "fawning up on" is [fˈɔːnɪŋ ˌʌp ˈɒn], [fˈɔːnɪŋ ˌʌp ˈɒn], [f_ˈɔː_n_ɪ_ŋ ˌʌ_p ˈɒ_n] (IPA phonetic alphabet).