The word Unthriftfuly is misspelled against Unthriftfully, an adverb meaning "Not thriftily."
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Unthriftfully has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings unthriftfu & y which should not be misspelled with single 'L'
Wrong Spelling: unthriftfu-l-y
Correct Spelling: unthriftfu-ll-y
Check more misspelled words of Unthriftfully to spell it correct.