Source : WordNet®

brutalise
     v 1: treat brutally [syn: {brutalize}]
     2: make brutal, unfeeling, or inhuman; "Life in the camps had
        brutalized him" [syn: {brutalize}, {animalize}, {animalise}]
     3: become brutal or insensitive and unfeeling [syn: {brutalize},
         {animalize}, {animalise}]