reprehensible vs unpermissible

reprehensible

adj
  • Blameworthy, censurable, guilty. 

  • Deserving of reprehension. 

noun
  • A reprehensible person; a villain. 

unpermissible

adj
  • Not permissible. 

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