meanly vs rigorously

meanly

adv
  • In a mean manner; ill-willed, nastily. 

  • Poorly or inadequately. 

  • Humbly, of or from low social status; basely. 

rigorously

adv
  • In a rigorous manner. 

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