TSUMUGU · TOCFL 1 (est.) · 字
被
被 ＝ 衤 ＋ 皮
ㄅㄟˋ · bèi
noun — a quilt; (grammar) the passive marker
字源 FORM — what the parts do
衤義clothes — cloth, a covering
{b,p,f}ITpí → bèi — the p hardens to b, tone shifts
衤 the cloth, 皮 the sound: a cloth that covers you in sleep — the quilt. 皮 pí carries the sound, hardened from p to b. What covers became the passive: 被 marks the one a thing is done to, covered by the action — 被打、被看見.
故事 STORY — a scene to remember it by
一塊布（衤）蓋下來，像皮（皮）裹住身體——被子。
A cloth (衤) settling down, wrapping you like a hide (皮) — the quilt.
字源記憶法
意 · Meanings
(本義)被、被子— a quilt, coverlet常用
→覆蓋、披— to cover, drape over
→被打、被害— the passive marker — the one covered by the action常用
(本義) original meaning · → ⇒ each arrow = one more step of extension