Mitened or Mittened: How To spell?
The word Mitened is misspelled against Mittened, an adjective meaning "Covered with a mitten or mittens."
Mittened has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings mi & ened which should not be misspelled with single 'T'
Wrong Spelling:  mi-t-ened  Correct Spelling:  mi-tt-ened 
Find more wrongly spelled words of Mittened to spell it well.