Imaterialities or Immaterialities: How To spell?
The word Imaterialities is misspelled against Immaterialities, which is plural of "Immateriality"
Immaterialities has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings i & aterialities which should not be misspelled with single 'M'
Wrong Spelling:  i-m-aterialities  Correct Spelling:  i-mm-aterialities 
Find more wrongly spelled words of Immaterialities to spell it well.