Decrasing or Decreasing: How To spell?

The word Decrasing is misspelled against Decreasing, an adjective meaning "Becoming less and less; diminishing."

Decreasing has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets decr & sing is misspelled as 'A'
Wrong Spelling:  decr-a-sing 
Correct Spelling:  decr-ea-sing 
Find more wrongly spelled words of Decreasing to spell it well.

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