Imaterially or Immaterially: How To spell?
The word Imaterially is misspelled against Immaterially, an adverb meaning "In an immaterial manner; without matter or corporeal substance."
Immaterially has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings i & aterially which should not be misspelled with single 'M'
Wrong Spelling:  i-m-aterially  Correct Spelling:  i-mm-aterially 
Find more wrongly spelled words of Immaterially to spell it well.