Diformity or Difformity: How To spell?
The word Diformity is misspelled against Difformity, a noun meaning "Irregularity of form; diversity of form; want of uniformity."
Difformity has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Di & ormity which should not be misspelled with single 'F'
Wrong Spelling:  Di-f-ormity  Correct Spelling:  Di-ff-ormity 
Find more incorrect spellings of Difformity to spell right way.