Refruner or Refrainer: How To spell?

The word Refruner is misspelled against Refrainer, a noun meaning "One who refrains."

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

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