Misspeled or Misspelled: How To spell?
The word Misspeled is misspelled against Misspelled, which is past tense of "Misspell"
Misspelled has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings misspe & ed which should not be misspelled with single 'L'
Wrong Spelling:  misspe-l-ed  Correct Spelling:  misspe-ll-ed 
Find more wrongly spelled words of Misspelled to spell it well.