happily vs reluctantly

happily

adv
  • By good chance; fortunately, successfully. 

  • With good will; in all happiness; willingly. 

  • In a happy or cheerful manner; with happiness. 

reluctantly

adv
  • In a reluctant or hesitant manner. 

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