The word Unthriftihod is misspelled against Unthriftihood, a noun meaning "Untriftiness."
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Unthriftihood has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings unthriftih & d which should not be misspelled with single 'O'
Wrong Spelling:  unthriftih-o-d 
Correct Spelling:  unthriftih-oo-d 
Find more incorrect spellings of Unthriftihood to spell right way.