Tretiser or Treatiser: How To spell?

The word Tretiser is misspelled against Treatiser, a noun meaning "One who writes a treatise."

Treatiser has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets tr & tiser is misspelled as 'E'
Wrong Spelling:  tr-e-tiser 
Correct Spelling:  tr-ea-tiser 
Find more wrongly spelled words of Treatiser to spell it well.

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