Correct spelling for the English word "brustalise" is [bɹˈʌstəlˌa͡ɪz], [bɹˈʌstəlˌaɪz], [b_ɹ_ˈʌ_s_t_ə_l_ˌaɪ_z] (IPA phonetic alphabet).
To make brutal or inhuman; to become like a beast.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.