TSUMUGU · TOCFL 1 (est.) · 字
酸
酸 ＝ 酉 ＋ 夋
ㄙㄨㄢ · suān
adj — sour, acid; noun — acid; adj — aching, sad
字源 FORM — what the parts do
酉義a wine jar, fermentingthe tall jar that ferments wine and vinegar
夋聲qūn — gives the sound, worn from qūn to suāna figure walking slowly (夂) below a head (allow/yield)
IFqūn → suān — initial and final both shifted
A fermenting jar (酉) and 夋 qūn for the sound, worn to suān. Wine gone too far turns to vinegar — the sour taste: 酸味、酸甜. The body's sour ache, and the heart's: 酸痛、心酸.
故事 STORY — a scene to remember it by
酒罈（酉）放久了發酸，那股味直衝鼻——酸。
The wine-jar (酉) left too long turns sour, the smell stinging the nose — that is 酸.
字源記憶法
意 · Meanings
(本義)酸味— sour, acid (the taste)常用
→酸痛、腰酸— aching, sore常用
⇒心酸— grieved, bitter (of the heart)
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
酉yǒuthe meaning-piece alone — 酉 is the bare wine-jar; 酸 adds for the sound醋＝ ＋ 昔cùthe partner taste — 醋 sets 昔 on the same jar (); both are what souring makes