A death prior to 65 is considered to be a premature death.

65岁以前的死亡被认为是过早死亡。

《柯林斯英汉双解大词典》

To the actor as to the absurd man, a premature death is irreparable.

对演员，也对荒谬的人来说，过早的死去才是无可弥补的。

youdao

The consequences of a scorned LiPo may be as slight as a premature death for the battery pack.

一个蔑视锂聚合物电池的后果可能是轻微的过早死亡的电池组。

youdao

And actually their chances of a premature death from smoking are three times higher than if they'd started smoking in their twenties.

BBC: Rocky times

There is always the possibility that such initiatives may meet a premature death.

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Academic studies show that the poor suffer worse health outcomes as a result, including premature death.

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