Beneficialnes or Beneficialness: How To spell?
The word Beneficialnes is misspelled against Beneficialness, a noun meaning "The quality of being beneficial; profitableness."
Beneficialness 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:  beneficialne-s  Correct Spelling:  beneficialne-ss 
Find more wrongly spelled words of Beneficialness to spell it well.