Unfiling or Unfailing: How To spell?

The word Unfiling is misspelled against Unfailing, an adjective meaning "Not failing; not liable to fail; inexhaustible; certain; sure."

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

You might be interested to know

Vinigrette or Vinaigrette?

Whitebit or Whitebait?

Apor or Apair?