Pronunciation: [ˌɛntˌiːˌɛfˈe͡ɪ] (IPA)
Correct spelling for the English word "ntfa" is [ˌɛntˌiːˌɛfˈe͡ɪ], [ˌɛntˌiːˌɛfˈeɪ], [ˌɛ_n_t_ˌiː__ˌɛ_f_ˈeɪ] (IPA phonetic alphabet).
Correct spelling for ntfa