TSUMUGU · B2 (est.) · 字
辜
ㄍㄨ · gū
noun — guilt, crime; verb — to fail, let down
字源 FORM — what the parts do
Tgǔ → gū — same g-, the tone lifts
The branding-blade (辛), the mark of punishment, with 古 gǔ for the sound. The base sense is a crime, guilt; from "owing for a wrong" comes 辜負 — to fail someone, to let them down.
故事 STORY — a scene to remember it by
刑刀（辛）懸在頭上，這人擔著一樁老（古）罪。
The punishing blade (辛) hangs over him — he carries an old (古) crime.
字源記憶法
意 · Meanings
(本義)罪、罪過— crime, guilt
→無辜— innocent, guiltless常用
→辜負— to fail, let someone down常用
(本義) original meaning · → ⇒ each arrow = one more step of extension