Overhad or Overhead: How To spell?

The word Overhad is misspelled against Overhead, an adverb meaning "Aloft; above; in or attached to the ceiling or roof; in the story or upon the floor above; in the zenith."

Overhead has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets overh & d is misspelled as 'A'
Wrong Spelling:  overh-a-d 
Correct Spelling:  overh-ea-d 
Explore spell check of Overhead to spell without errors.

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