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