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