Treblenes or Trebleness: How To spell?
The word Treblenes is misspelled against Trebleness, a noun meaning "The quality or state of being treble; as, the trebleness of tones."
Trebleness 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:  treblene-s  Correct Spelling:  treblene-ss 
Explore spell check of Trebleness to spell without errors.