HSK 4
死
sǐ动形（副）
to die; impassable; uncrossable; inflexible
院子里的小树已经死了。
Yuàn zi lǐ de xiǎo shù yǐ jīng sǐ le.
The small tree in the yard has died.
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Appears across levels (4（5）) in the HSK 3.0 word list.