Heeghtener or Heightener: How To spell?

The word Heeghtener is misspelled against Heightener, a noun meaning "One who, or that which, heightens."

Word contains consecutive vowels 'EI' in between alphabets h & ghtener is misspelled as 'EE'
Wrong Spelling:  h-ee-ghtener 
Correct Spelling:  h-ei-ghtener 
Explore spell check of Heightener to spell without errors.