Geiner or Gainer: How To spell?

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

Word contains consecutive vowels 'AI' in between alphabets g & ner is misspelled as 'EI'
Wrong Spelling:  g-ei-ner 
Correct Spelling:  g-ai-ner 
Find more wrongly spelled words of Gainer to spell it well.

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