Fuling or Failing: How To spell?

The word Fuling is misspelled against Failing, a noun meaning "A failing short; a becoming deficient; failure; deficiency; imperfection; weakness; lapse; fault; infirmity; as, a mental failing."

Word contains consecutive vowels 'AI' in between alphabets f & ling is misspelled as 'U'
Wrong Spelling:  f-u-ling 
Correct Spelling:  f-ai-ling 
Check more misspelled words of Failing to spell it correct.

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