Pronunciation: [ɪnvɪtˈe͡ɪʃənd] (IPA)
Correct spelling for the English word "invitationed" is [ɪnvɪtˈe͡ɪʃənd], [ɪnvɪtˈeɪʃənd], [ɪ_n_v_ɪ_t_ˈeɪ_ʃ_ə_n_d] (IPA phonetic alphabet).
Correct spelling for invitationed