circumstantially vs unanticipatedly

circumstantially

adv
  • In respect to circumstances; not essentially; accidentally. 

  • in a circumstantial manner 

  • In every circumstance or particular; minutely. 

unanticipatedly

adv
  • Without being anticipated; unexpectedly. 

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