1. (

• bloody-minded ,
• cantankerous

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

2. (

• bloodthirsty ,
• bloody-minded ,
• sanguinary

) 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 ;