The word Eghteenth is misspelled against Eighteenth, a noun meaning "The eighth after the tenth."
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Word begins with consecutive vowels 'EI' followed by alphabets 'ghteenth' is misspelled as 'E' as letter 'I' is phonetically ign
Wrong Spelling:  e-ghteenth 
Correct Spelling:  ei-ghteenth 
Explore spell check of Eighteenth to spell without errors.