Unridler or Unriddler: How To spell?

The word Unridler is misspelled against Unriddler, a noun meaning "One who unriddles."

Unriddler has double "dd" is mispronounced as "d"
Remember double 'DD' in between the strings Unri & ler which should not be misspelled with single 'D'
Wrong Spelling:  Unri-d-ler 
Correct Spelling:  Unri-dd-ler 
Find more wrongly spelled words of Unriddler to spell it well.

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