Unfilable or Unfailable: How To spell?

The word Unfilable is misspelled against Unfailable, an adjective meaning "Infallible."

Word contains consecutive vowels 'AI' in between alphabets unf & lable is misspelled as 'I'
Wrong Spelling: unf-i-lable
Correct Spelling: unf-ai-lable
Find more wrongly spelled words of Unfailable to spell it well.