Sluming or Slumming: How To spell?
The word Sluming is misspelled against Slumming, which is present continuous of "Slum"
Slumming has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings slu & ing which should not be misspelled with single 'M'
Wrong Spelling:  slu-m-ing  Correct Spelling:  slu-mm-ing 
Check more misspelled words of Slumming to spell it correct.