insensible vs not worth a whistle

insensible

adj
  • Not sensible or reasonable; meaningless. 

  • Incapable or deprived of physical sensation. 

  • Unable to be perceived by the senses. 

  • Incapable of mental feeling; indifferent. 

  • Incapable of emotional feeling; callous; apathetic. 

  • Unable to be understood; unintelligible. 

not worth a whistle

adj
  • Worthless or pointless. 

How often have the words insensible and not worth a whistle occurred in a corpus of books? (source: Google Ngram Viewer )