Pronunciation: [fɹˈɒstɪt͡ʃ] (IPA)
Correct spelling for the English word "frostitch" is [fɹˈɒstɪt͡ʃ], [fɹˈɒstɪtʃ], [f_ɹ_ˈɒ_s_t_ɪ_tʃ] (IPA phonetic alphabet).