The word Foultiness is misspelled against Faultiness, a noun meaning "Quality or state of being faulty."
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Word contains consecutive vowels 'AU' in between alphabets f & ltiness is misspelled as 'OU'
Wrong Spelling:  f-ou-ltiness 
Correct Spelling:  f-au-ltiness 
Check more misspelled words of Faultiness to spell it correct.