Lest or Least: How To spell?

The word Lest is misspelled against Least, an adjective meaning "Smallest, either in size or degree; shortest; lowest; most unimportant; as, the least insect; the least mercy; the least space."

Least has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets l & st is misspelled as 'E'
Wrong Spelling:  l-e-st 
Correct Spelling:  l-ea-st 
Explore spell check of Least to spell without errors.

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