Fidledeedee or Fiddledeedee: How To spell?
The word Fidledeedee is misspelled against Fiddledeedee, an interjection meaning "An exclamatory word or phrase, equivalent to nonsense!"
Fiddledeedee has double "dd" is mispronounced as "d"Remember double 'DD' in between the strings Fi & ledeedee which should not be misspelled with single 'D'
Wrong Spelling:  Fi-d-ledeedee  Correct Spelling:  Fi-dd-ledeedee 
Find more wrongly spelled words of Fiddledeedee to spell it well.