fortuitously vs opportunely

fortuitously

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

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

opportunely

adv
  • In a manner convenient or advantageous at some particular time. 

  • In a manner suitable for some particular purpose. 

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