Nyther or Neither: How To spell?

The word Nyther is misspelled against Neither, an adjective meaning "Not either; not the one or the other."

Word contains consecutive vowels 'EI' in between alphabets n & ther is misspelled as 'Y'
Wrong Spelling:  n-y-ther 
Correct Spelling:  n-ei-ther 
Explore spell check of Neither to spell without errors.