The word Adling is misspelled against Addling, which is present continuous of "Addle"
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Addling has double "dd" is mispronounced as "d"
Remember double 'DD' in between the strings A & ling which should not be misspelled with single 'D'
Wrong Spelling:  A-d-ling 
Correct Spelling:  A-dd-ling 
Find more wrongly spelled words of Addling to spell it well.