Alertnes or Alertness: How To spell?

The word Alertnes is misspelled against Alertness, a noun meaning "The quality of being alert or on the alert; briskness; nimbleness; activity."

Alertness 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: alertne-s
Correct Spelling: alertne-ss
Explore spell check of Alertness to spell without errors.