hebetate vs lead-footed

hebetate

adj
  • Having a dull or blunt and soft point 

  • obtuse; dull 

verb
  • To render obtuse; to dull; to blunt. 

lead-footed

adj
  • Slow, boring, dull, or stupid. 

  • Tending to drive too fast. 

How often have the words hebetate and lead-footed occurred in a corpus of books? (source: Google Ngram Viewer )