v. i. To sink to the state of a brute. [ 1913 Webster ]

The soul grows clotted by contagion,
Imbodies, and imbrutes, till she quite lose
The divine property of her first being. Milton. [ 1913 Webster ]

v. t. [ imp. & p. p. Imbruted; p. pr. & vb. n. Imbruting. ] [ Pref. im- in + brute: cf. F. abrutir. Cf. Embrute. ] To degrade to the state of a brute; to make brutal. [ 1913 Webster ]

And mixed with bestial slime,
THis essence to incarnate and imbrute. Milton. [ 1913 Webster ]

n. The act of imbruting, or the state of being imbruted. [ R. ] Brydges. [ 1913 Webster ]