Guner or Gainer: How To spell?

The word Guner is misspelled against Gainer, a noun meaning "One who gains."

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

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