The word Tretably is misspelled against Treatably, an adverb meaning "In a treatable manner."
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Treatably has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets tr & tably is misspelled as 'E'
Wrong Spelling:  tr-e-tably 
Correct Spelling:  tr-ea-tably 
Explore spell check of Treatably to spell without errors.