arrant

Adjective

• without qualification; used informally as (often pejorative) intensifiers
  • an arrant fool
    
  • a complete coward
    
  • a consummate fool
    
  • a double-dyed villain
    
  • gross negligence
    
  • a perfect idiot
    
  • pure folly
    
  • what a sodding mess
    
  • stark staring mad
    
  • a thoroughgoing villain
    
  • utter nonsense
    
  • the unadulterated truth