Yankeysm or Yankeeism: How To spell?

The word Yankeysm is misspelled against Yankeeism, a noun meaning "A Yankee idiom, word, custom, or the like."

Word contains consecutive vowels 'EI' in between alphabets yanke & sm is misspelled as 'Y'
Wrong Spelling:  yanke-y-sm 
Correct Spelling:  yanke-ei-sm 
Explore spell check of Yankeeism to spell without errors.