bloody1
  
  adj.
 (bloodier, bloodiest)
  - covered with or composed of blood.
 - involving much violence or cruelty.
 
v.
 (bloodies, bloodying, bloodied)
 cover or stain with blood.
 
  Derivative
  
    - bloodily adv.
  - bloodiness n.
 
   
 
  
    
bloody2
  
  adj.
 (bloodier, bloodiest)
 informal, chiefly Brit.  - used to express anger or shock, or for emphasis.
 - dated unpleasant or perverse:
 don't be too bloody to poor Nigel.
 
 
  History
  Although widely believed to be a blasphemous reference to the blood of God or Christ, as in the archaic oath 'S-blood or God's blood, the informal use of bloody was probably, in the first place, simply a reference to young bloods (that is ‘young aristocrats’, or children of ‘good blood’), who behaved in a rowdy manner; in the 17th century the phrase bloody drunk meant ‘drunk as a blood’ or ‘drunk as a lord’.