Coeficacy or Coefficacy: How To spell?

The word Coeficacy is misspelled against Coefficacy, a noun meaning "Joint efficacy."

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

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