The word Decrased is misspelled against Decreased, which is past tense of "Decrease"
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Decreased has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets decr & sed is misspelled as 'A'
Wrong Spelling:  decr-a-sed 
Correct Spelling:  decr-ea-sed 
Explore spell check of Decreased to spell without errors.