brute (adj.) Look up brute at Dictionary.com
early 15c., "of or belonging to animals," from Middle French brut "coarse, brutal, raw, crude," from Latin brutus "heavy, dull, stupid," an Oscan word, from PIE root *gwere- "heavy" (see grave (adj.)). Before reaching English the meaning expanded to "of the lower animals." Used of human beings from 1530s.
brute (n.) Look up brute at Dictionary.com
1610s, from brute (adj.).