TSUMUGU · C1 (est.) · 字
添
添 ＝ 氵 ＋ 忝
ㄊㄧㄢ · tiān
verb — to add, put more; to increase
字源 FORM — what the parts do
氵義water
忝聲tiǎn — gives the sound天 over the heart 㣺 — the worn shape under the water
Ttiǎn → tiān — only the tone moves
Water (氵) poured in to make more — to add. The right side is 忝 tiǎn, with 天 riding over a heart-foot (㣺); it carries the sound, only the tone moved. From topping water up, adding anything at all: 添加、增添.
故事 STORY — a scene to remember it by
茶喝去半杯，提壺再倒（氵）——添滿。
Half the tea is gone; the pot tips and pours again (氵) — topped up.
字源記憶法
意 · Meanings
(本義)添加、添水— to add, put more常用
→增添、添置— to increase, acquire more
(本義) original meaning · → ⇒ each arrow = one more step of extension
關 · Related
忝tiǎnthe sound side — 忝 sits on the heart-foot 㣺, 添 swaps in water