Illegalnes or Illegalness: How To spell?

The word Illegalnes is misspelled against Illegalness, a noun meaning "Illegality, unlawfulness."

Illegalness 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:  illegalne-s 
Correct Spelling:  illegalne-ss 
Explore spell check of Illegalness to spell without errors.

You might be interested to know

Incredulousnes or Incredulousness?

Inharmoniousnes or Inharmoniousness?

Involuntarines or Involuntariness?