havering vs inscrutable

havering

adj
  • Hesitant; indecisive. 

  • Long-winded 

noun
  • Indecision, indecisive behaviour. 

inscrutable

adj
  • Difficult or impossible to comprehend, fathom, or interpret. 

noun
  • One who or that which is inscrutable; a person, etc. that cannot be comprehended. 

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