Briefnes or Briefness: How To spell?
The word Briefnes is misspelled against Briefness, a noun meaning "The quality of being brief; brevity; conciseness in discourse or writing."
Briefness 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:  briefne-s  Correct Spelling:  briefne-ss 
Find more wrongly spelled words of Briefness to spell it well.