also: しゅっする
suru verb (special), intransitive verb
Formal or literary term for dying. Used in solemn contexts such as obituaries, historical accounts, or respectful references to someone's death.
祖父は昨晩、静かに卒した。
My grandfather passed away quietly last night.
その武将は戦場で卒したと伝えられている。
It is said that the warlord died on the battlefield.