Twined or Twinned: How To spell?
The word Twined is misspelled against Twinned, an adjective meaning "Composed of parts united according to a law of twinning. See Twin, n., 4."
Twinned has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings twi & ed which should not be misspelled with single 'N'
Wrong Spelling:  twi-n-ed  Correct Spelling:  twi-nn-ed 
Find more wrongly spelled words of Twinned to spell it well.