Controlability or Controllability: How To spell?
The word Controlability is misspelled against Controllability, a noun meaning "Capability of being controlled; controllableness."
Controllability has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings contro & ability which should not be misspelled with single 'L'
Wrong Spelling:  contro-l-ability  Correct Spelling:  contro-ll-ability 
Find more incorrect spellings of Controllability to spell right way.