Ighteenth or Eighteenth: How To spell?

The word Ighteenth is misspelled against Eighteenth, a noun meaning "The eighth after the tenth."

Word begins with consecutive vowels 'EI' followed by alphabets 'ghteenth' is misspelled as 'I' as letter 'E' is phonetically ign
Wrong Spelling:  i-ghteenth 
Correct Spelling:  ei-ghteenth 
Explore spell check of Eighteenth to spell without errors.