Ineficiency or Inefficiency: How To spell?
The word Ineficiency is misspelled against Inefficiency, a noun meaning "The quality of being inefficient; want of power or energy sufficient; want of power or energy sufficient for the desired effect; inefficacy; incapacity; as, he was discharged from his position for inefficiency."
Inefficiency has double "ff" is mispronounced as "f"Remember double 'FF' in between the strings Ine & iciency which should not be misspelled with single 'F'
Wrong Spelling:  Ine-f-iciency  Correct Spelling:  Ine-ff-iciency 
Find more wrongly spelled words of Inefficiency to spell it well.