Unbiden or Unbidden: How To spell?
The word Unbiden is misspelled against Unbidden, an adjective meaning "Being without a prayer."
Unbidden has double "dd" is mispronounced as "d"Remember double 'DD' in between the strings Unbi & en which should not be misspelled with single 'D'
Wrong Spelling:  Unbi-d-en  Correct Spelling:  Unbi-dd-en 
Find more wrongly spelled words of Unbidden to spell it well.