Perfidiousnes or Perfidiousness: How To spell?

The word Perfidiousnes is misspelled against Perfidiousness, a noun meaning "The quality of being perfidious; perfidy."

Perfidiousness 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:  perfidiousne-s 
Correct Spelling:  perfidiousne-ss 
Check more misspelled words of Perfidiousness to spell it correct.

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