Pronunciation: [bjˈuːmɒfɪŋ] (IPA)
Correct spelling for the English word "bumoffing" is [bjˈuːmɒfɪŋ], [bjˈuːmɒfɪŋ], [b_j_ˈuː_m_ɒ_f_ɪ_ŋ] (IPA phonetic alphabet).