TSUMUGU · TOCFL 3 (est.) · 字
純
純 ＝ 糸 ＋ 屯
ㄔㄨㄣˊ · chún
adj — pure, unmixed, simple, sheer
字源 FORM — what the parts do
糸義silk thread
屯聲tún — gives the sound, worn across the initiala sprout straining up through soil
{t,d,zh,ch}Itún → chún — the t-to-ch crossing
Plain silk (糸), one undyed thread; 屯 tún, a sprout pushing up, carries the sound, worn to chún. Unmixed silk gives every pure thing: 純粹、單純、純樸.
故事 STORY — a scene to remember it by
一束未染的白絲（糸），單單一色——純。
A skein of undyed white silk (糸), one color only — pure.
字源記憶法
意 · Meanings
(本義)純絲、純淨— pure, unmixed常用
→純粹、單純— sheer; simple
⇒純樸、純真— plain and honest; innocent
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
屯túnthe sound donor bare — add the silk for the pure thread絲＝ ＋ sīthe silk partner — 絲 doubles the thread, 純 keeps one and dyes it none