Engruning or Engraining: How To spell?

The word Engruning is misspelled against Engraining, which is present continuous of "Engrain"

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

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