Interaditive or Interadditive: How To spell?
The word Interaditive is misspelled against Interadditive, an adjective meaning "Added or placed between the parts of another thing, as a clause inserted parenthetically in a sentence."
Interadditive has double "dd" is mispronounced as "d"Remember double 'DD' in between the strings Intera & itive which should not be misspelled with single 'D'
Wrong Spelling:  Intera-d-itive  Correct Spelling:  Intera-dd-itive 
Find more wrongly spelled words of Interadditive to spell it well.