obnoxious vs unexceptionable

obnoxious

adj
  • Exposed or vulnerable to something, especially harm or injury. 

  • Extremely offensive or unpleasant; very annoying, contemptible, or odious. 

unexceptionable

adj
  • Beyond reproach; unimpeachable 

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