Skininess or Skinniness: How To spell?
The word Skininess is misspelled against Skinniness, a noun meaning "Quality of being skinny."
Skinniness has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings ski & iness which should not be misspelled with single 'N'
Wrong Spelling:  ski-n-iness  Correct Spelling:  ski-nn-iness 
Find more wrongly spelled words of Skinniness to spell it well.