Ilighten or Illighten: How To spell?
The word Ilighten is misspelled against Illighten, a verb meaning "To enlighten."
Illighten has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings i & ighten which should not be misspelled with single 'L'
Wrong Spelling:  i-l-ighten  Correct Spelling:  i-ll-ighten 
Find more wrongly spelled words of Illighten to spell it well.