The word Decausing is misspelled against Deceasing, which is present continuous of "Decease"
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Deceasing has vowels 'ea' together mispronounced as 'au'
Word contains consecutive vowels 'EA' in between alphabets dec & sing is misspelled as 'AU'
Wrong Spelling:  dec-au-sing 
Correct Spelling:  dec-ea-sing 
Check more misspelled words of Deceasing to spell it correct.