Forehairth or Forehearth: How To spell?

The word Forehairth is misspelled against Forehearth, a noun meaning "The forward extension of the hearth of a blast furnace under the tymp."

Forehearth has vowels 'ea' together mispronounced as 'ai'
Word contains consecutive vowels 'EA' in between alphabets foreh & rth is misspelled as 'AI'
Wrong Spelling:  foreh-ai-rth 
Correct Spelling:  foreh-ea-rth 
Find more incorrect spellings of Forehearth to spell right way.

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