imbrute

verb2

1. •
   To make brutal

   • It was his belief in his father's indifference or dislike that hardened and imbruted him; it is only when he hears how that father loved him that I now melt his pride and curb his passions. — 1849
2. •
   To degrade to the state of a brute

   • How deep was the change, made upon the imbruted Asiatics, we may perhaps question. — 1905