Yankeism or Yankeeism: How To spell?
The word Yankeism is misspelled against Yankeeism, a noun meaning "A Yankee idiom, word, custom, or the like."
Yankeeism has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Yank & ism which should not be misspelled with single 'E'
Wrong Spelling:  Yank-e-ism  Correct Spelling:  Yank-ee-ism 
Find more wrongly spelled words of Yankeeism to spell it well.