hebetate vs ponderous

hebetate

adj
  • Having a dull or blunt and soft point 

  • obtuse; dull 

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

ponderous

adj
  • Dull, boring, tedious; long-winded in expression. 

  • Heavy, massive, weighty. 

  • Clumsy, unwieldy, or slow, especially due to weight. 

  • Characterized by or associated with pondering. 

  • Serious, onerous, oppressive. 

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