definition of
decease

[1] #1 decease n. [death, expiry] the event of dying or departure from life; "her death came as a terrible shock"; "upon your decease the capital will pass to your grandchildren". wn

[2] #2 decease v. [die, perish, go, exit, pass away, expire, pass, kick the bucket, cash in one's chips, buy the farm, conk, give-up the ghost, drop dead, pop off, choke, croak, snuff it] pass from physical life and lose all bodily attributes and functions necessary to sustain life; "She died from cancer"; "The children perished in the fire"; "The patient went peacefully"; "The old guy kicked the bucket at the age of 102". wn