fortuitously vs wittingly

fortuitously

adv
  • In a fortuitous manner; in a manner of happening by chance; coincidentally; accidentally. 

  • In a fortuitous manner; in a manner of happening by a lucky chance; luckily; fortunately. 

wittingly

adv
  • in a witting manner, intentionally, on purpose 

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