Inflexiblenes or Inflexibleness: How To spell?
The word Inflexiblenes is misspelled against Inflexibleness, a noun meaning "The quality or state of being inflexible; inflexibility; rigidity; firmness."
Inflexibleness 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:  inflexiblene-s  Correct Spelling:  inflexiblene-ss 
Find more wrongly spelled words of Inflexibleness to spell it well.