Heirbreadth or Hairbreadth: How To spell?
The word Heirbreadth is misspelled against Hairbreadth, an adjective meaning "Having the breadth of a hair; very narrow; as, a hairbreadth escape."
Word contains consecutive vowels 'AI' in between alphabets h & rbreadth is misspelled as 'EI'Wrong Spelling:  h-ei-rbreadth  Correct Spelling:  h-ai-rbreadth 
Find more wrongly spelled words of Hairbreadth to spell it well.