in earnest vs wittingly

in earnest

adv
  • Having a sincere intent. 

  • With considerable commitment, determination, or effect; significantly. 

adj
  • Sincere; determined; truthful. 

wittingly

adv
  • in a witting manner, intentionally, on purpose 

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