Pronunciation: [ɪmpɹˈɒvɪŋ] (IPA)
Correct spelling for the English word "improvving" is [ɪmpɹˈɒvɪŋ], [ɪmpɹˈɒvɪŋ], [ɪ_m_p_ɹ_ˈɒ_v_ɪ_ŋ] (IPA phonetic alphabet).
Correct spelling for improvving