Pronunciation: [ɪnsˈɒnɪkˌe͡ɪt] (IPA)
Correct spelling for the English word "insonicate" is [ɪnsˈɒnɪkˌe͡ɪt], [ɪnsˈɒnɪkˌeɪt], [ɪ_n_s_ˈɒ_n_ɪ_k_ˌeɪ_t] (IPA phonetic alphabet).