TSUMUGU · TOCFL B2 (est.) · 字
朽
朽 ＝ 木 ＋ 丂
ㄒㄧㄡˇ · xiǔ
verb/adj — to rot, decay; rotten
字源 FORM — what the parts do
丂聲the breath-blocked stem — the sound donorthe right-side hook; it only stands alone in old graphs, the student meets it here
IFTkǎo → xiǔ — the donor's reading and the modern one no longer match
Wood (木) and the old stem 丂 for the sound — the tree gone soft and crumbling. The reading drifted far from its donor. What time eats away: 腐朽、朽木、朽壞.
故事 STORY — a scene to remember it by
一截老木（木）泡久了，一按就酥——朽了。
An old log (木) soaked too long; press it and it crumbles — rotted through.
字源記憶法
意 · Meanings
(本義)朽木、腐朽— to rot, rotten常用
→朽壞、衰朽— to decay and ruin
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
枯kūthe lookalike — both start with wood ; 枯 dries out under 古, 朽 rots soft under