Diferentiator or Differentiator: How To spell?

The word Diferentiator is misspelled against Differentiator, a noun meaning "One who, or that which, differentiates."

Differentiator has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Di & erentiator which should not be misspelled with single 'F'
Wrong Spelling:  Di-f-erentiator 
Correct Spelling:  Di-ff-erentiator 
Find more incorrect spellings of Differentiator to spell right way.

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