Slepwaking or Sleepwaking: How To spell?
The word Slepwaking is misspelled against Sleepwaking, a noun meaning "The state of one mesmerized, or in a partial and morbid sleep."
Sleepwaking has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Sl & pwaking which should not be misspelled with single 'E'
Wrong Spelling:  Sl-e-pwaking  Correct Spelling:  Sl-ee-pwaking 
Find more wrongly spelled words of Sleepwaking to spell it well.