brutal in WordNet English dictionary

1. (of persons or their actions) able or disposed to inflict pain or suffering
   "a barbarous crime"; "brutal beatings"; "cruel tortures"; "Stalin's roughshod treatment of the kulaks"; "a savage slap"; "vicious kicks"
   barbarous  brutal  cruel  fell  roughshod  savage  vicious 
   
2. resembling a beast; showing lack of human sensibility
   "beastly desires"; "a bestial nature"; "brute force"; "a dull and brutish man"; "bestial treatment of prisoners"
   beastly  bestial  brute  brutish  brutal 
   
3. disagreeably direct and precise
   "he spoke with brutal honesty"
   brutal 
   
4. harsh
   "the brutal summer sun"; "a brutal winter"
   brutal  unrelenting