Febleness or Feebleness: How To spell?
The word Febleness is misspelled against Feebleness, a noun meaning "The quality or condition of being feeble; debility; infirmity."
Feebleness has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings F & bleness which should not be misspelled with single 'E'
Wrong Spelling:  F-e-bleness  Correct Spelling:  F-ee-bleness 
Explore spell check of Feebleness to spell without errors.