突とつ然ぜん死し

noun

sudden death; unexpected death

Medical and general term for death that occurs suddenly and unexpectedly, often from natural causes like heart attack or stroke. Also used in non-medical contexts for any abrupt, unforeseen death.

• 彼かれは突とつ然ぜん死しで亡なくなった。

  He died of sudden death.

• 突とつ然ぜん死しの原げん因いんを調しらべるために解かい剖ぼうが行おこなわれた。

  An autopsy was performed to investigate the cause of the sudden death.