Pronunciation: [ɪnvˈɛktɪv] (IPA)
Correct spelling for the English word "invectiv" is [ɪnvˈɛktɪv], [ɪnvˈɛktɪv], [ɪ_n_v_ˈɛ_k_t_ɪ_v] (IPA phonetic alphabet).