Wintergren or Wintergreen: How To spell?
The word Wintergren is misspelled against Wintergreen, a noun meaning "A plant which keeps its leaves green through the winter."
Wintergreen has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Wintergr & n which should not be misspelled with single 'E'
Wrong Spelling:  Wintergr-e-n  Correct Spelling:  Wintergr-ee-n 
Find more wrongly spelled words of Wintergreen to spell it well.