TSUMUGU · TOCFL C1 (est.) · 字
兢
兢 ＝ 兄
ㄐㄧㄥ · jīng
adj — wary, careful, on edge (only in 兢兢)
字源 FORM — what the parts do
Two elder brothers (兄) side by side, each straining to outdo the other — to vie, and from the strain, to walk on edge. 兢兢 holds that braced, careful watchfulness: 戰戰兢兢.
故事 STORY — a scene to remember it by
兩個哥哥（兄）並排站著，誰也不讓誰，肩膀都繃得緊緊的。
Two elder brothers (兄) stand shoulder to shoulder, neither yielding, both braced tight.
字源記憶法
意 · Meanings
(本義)二兄相競— to vie, strain against a rival
→兢兢、戰戰兢兢— wary, careful, on edge常用
(本義) original meaning · → ⇒ each arrow = one more step of extension