Lackbrun or Lackbrain: How To spell?

The word Lackbrun is misspelled against Lackbrain, a noun meaning "One who is deficient in understanding; a witless person."

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

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