Pronunciation: [ɪntˈɛnsɪtiɪŋ] (IPA)
Correct spelling for the English word "intensitying" is [ɪntˈɛnsɪtiɪŋ], [ɪntˈɛnsɪtiɪŋ], [ɪ_n_t_ˈɛ_n_s_ɪ_t_i__ɪ_ŋ] (IPA phonetic alphabet).