irreproachable vs reprehensible

irreproachable

adj
  • Free from blame, not open to reproach or criticism; blameless. 

reprehensible

adj
  • Deserving of reprehension. 

  • Blameworthy, censurable, guilty. 

noun
  • A reprehensible person; a villain. 

How often have the words irreproachable and reprehensible occurred in a corpus of books? (source: Google Ngram Viewer )