英年早逝

yīngniánzǎoshì
  1. to die an untimely death (idiom)
  2. to be cut off in one's prime

CEDICT

to pass away at the prime of one's life; to die young

Wiktionary

人在青年时离开人世、死亡

維基詞典

Entry Composition

1 英年 yīngnián
  1. the prime of one's life
  2. youthful years
2 早逝 zǎoshì
  1. early demise
  2. untimely death