Efectiveness or Effectiveness: How To spell?

The word Efectiveness is misspelled against Effectiveness, a noun meaning "The quality of being effective."

Effectiveness has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings E & ectiveness which should not be misspelled with single 'F'
Wrong Spelling:  E-f-ectiveness 
Correct Spelling:  E-ff-ectiveness 
Find more wrongly spelled words of Effectiveness to spell it well.

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