The word Overheyt is misspelled against Overheat, a verb meaning "To heat to excess; to superheat."
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Overheat has vowels 'ea' together mispronounced as 'ey'
Word contains consecutive vowels 'EA' in between alphabets overh & t is misspelled as 'EY'
Wrong Spelling:  overh-ey-t 
Correct Spelling:  overh-ea-t 
Explore spell check of Overheat to spell without errors.