[1] : The Collaborative International Dictionary of English v.0.48

decease \decease"\, v. i. imp.  p. p. deceased; p. pr. 
   vb. n. deceasing.
   to depart from this life; to die; to pass away.
   1913 webster

         she's dead, deceased, she's dead.        --shak.
   1913 webster

         when our summers have deceased.          --tennyson.
   1913 webster

         inasmuch as he carries the malignity and the lie with
         him, he so far deceases from nature.     --emerson.
   1913 webster
see also:
deceased deceasing 

Deceasing >> D Words
Deceasing, definition of term: Deceasing
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