Madening or Maddening: How To spell?

The word Madening is misspelled against Maddening, which is present continuous of "Madden"

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