せきにん
responsibility, liability
Somebody has to answer for it, and the duty of doing so is a thing you can pick up or leave. He picked it up and resigned rather than let somebody else take the sack せき: せきにん.
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Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.