unaccountably
1. [ adverb ] in an unaccountable manner
Examples:

"in the book, a tycoon unaccountably becomes the hero's friend"

Related terms: unaccountable unaccountable
Similar spelling:   unaccountable
  uncomfortably
  unconsolable
  uncomparably
  uncombable
  unsoundable
  unconstraint
  uncontrollably
  uncomfortable
  unconstrained