decease
de-cease
verb
To die; to pass away, typically used in formal or legal contexts.
"He has deceased, according to the records."
noun
The formal term for someone's death or the act of dying.
"The date of his decease was recorded."
Thesaurus
Synonyms: perish, cash in one's chips, conk, expire, buy the farm, croak, exit, pass, drop dead, choke, pop off, give-up the ghost