The word Mispelt is misspelled against Misspelt, which is past perfect of "Misspell"
-->
Misspelt has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings mi & pelt which should not be misspelled with single 'S'
Wrong Spelling: mi-s-pelt
Correct Spelling: mi-ss-pelt
Find more wrongly spelled words of Misspelt to spell it well.