bloody-minded

Adjective

• marked by eagerness to resort to violence and bloodshed
  • bloody-minded tyrants
    
  • bloodthirsty yells
    
  • went after the collaborators with a sanguinary fury that drenched the land with blood-G.W.Johnson
    

• stubbornly obstructive and unwilling to cooperate
  • unions...have never been as bloody-minded about demarcation as the shipbuilders- Spectator
    

Related words

• Synonyms: 
  bloodthirsty , sanguinary , cantankerous