Fon or Fain: How To spell?

The word Fon is misspelled against Fain, an adjective meaning "Satisfied; contented; also, constrained."

Word contains consecutive vowels 'AI' in between alphabets f & n is misspelled as 'O'
Wrong Spelling:  f-o-n 
Correct Spelling:  f-ai-n 
Find more incorrect spellings of Fain to spell right way.

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