Effectivenes or Effectiveness: How To spell?

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

--> Effectiveness has double 'ss' in the end mispronounced as 's'
Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  effectivene-s 
Correct Spelling:  effectivene-ss 
Find more wrongly spelled words of Effectiveness to spell it well.

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