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