尽 means “run out, exhaust, devote”

つきる · tsukiru

Also: use up, run out of, deplete

Kun'yomi (Japanese reading)
つきる, つくす, つかす, ことごとく
On'yomi (Chinese reading)
ジン, サン

JLPT N1 · Taught in secondary school · 6 strokes

The story

A body (尸) with two last drops falling from it: everything given until nothing is left. 尽きる is to run out, 尽くす is to give your all, 無尽蔵 is inexhaustible, and 理不尽 is something beyond all reason.

Used in 尽くす (tsukusu, to devote oneself), 尽きる (tsukiru, to run out), and 理不尽 (rifujin, unreasonable)

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.