Promiscuousnes or Promiscuousness: How To spell?
The word Promiscuousnes is misspelled against Promiscuousness, a noun meaning "The quality or state of being promiscuous."
Promiscuousness has double 'ss' in the end mispronounced as 's'Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  promiscuousne-s  Correct Spelling:  promiscuousne-ss 
Check more misspelled words of Promiscuousness to spell it correct.