Fixednes or Fixedness: How To spell?
The word Fixednes is misspelled against Fixedness, a noun meaning "The quality of a body which resists evaporation or volatilization by heat; solidity; cohesion of parts; as, the fixedness of gold."
Fixedness 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:  fixedne-s  Correct Spelling:  fixedne-ss 
Find more wrongly spelled words of Fixedness to spell it well.