TSUMUGU · B2 (est.) · 字
固
固 ＝ 囗 ＋ 古
ㄍㄨˋ · gù
adj/verb — solid, firm; to make firm
字源 FORM — what the parts do
囗義a wall closed all round
Tgǔ → gù — only the tone bends
A wall closed on every side (囗) and 古 gǔ inside carrying the sound, tone bent to gù. Walled in and standing since old times — solid, hard to move: 堅固、固定、頑固.
故事 STORY — a scene to remember it by
一圈牆（囗）把老地基（古）圍死——穩穩當當，固若金湯。
A wall (囗) closes round the old ground (古) — fixed fast, immovable.
字源記憶法
意 · Meanings
(本義)堅固、牢固— solid, firm常用
→固定— to fix in place常用
⇒頑固、固執— stubborn — fixed in the mind
(本義) original meaning · → ⇒ each arrow = one more step of extension