Pronunciation: [ɪmpɹˈɒvd] (IPA)
Correct spelling for the English word "improvved" is [ɪmpɹˈɒvd], [ɪmpɹˈɒvd], [ɪ_m_p_ɹ_ˈɒ_v_d] (IPA phonetic alphabet).
Correct spelling for improvved