Dadening or Deadening: How To spell?

The word Dadening is misspelled against Deadening, which is present continuous of "Deaden"

Deadening has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets d & dening is misspelled as 'A'
Wrong Spelling:  d-a-dening 
Correct Spelling:  d-ea-dening 
Find more wrongly spelled words of Deadening to spell it well.

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