BRUTALISE
brutalize, brutalise, animalize, animalise
(verb) become brutal or insensitive and unfeeling
brutalize, brutalise, animalize, animalise
(verb) make brutal, unfeeling, or inhuman; “Life in the camps had brutalized him”
brutalize, brutalise
(verb) treat brutally
Source: WordNet® 3.1
Etymology
Verb
brutalise (third-person singular simple present brutalises, present participle brutalising, simple past and past participle brutalised)
(transitive) To inflict brutal violence on.
(transitive) To make brutal, cruel or harsh.
(intransitive, dated) To live or behave like a brute.
Source: Wiktionary